AMSOIL Synthetic Motor Oils – Motor Oils That Are Designed, Not Refined

Protect Your Engine With AMSOIL Synthetic Motor Oils

Get Top Performance and Extended Drain Intervals from Virtually Any 4-cycle Engine

Amzoil-canAzo-SigWhen the first can of AMSOIL 10W-40 appeared on the market in 1972, it signaled the birth of an entire industry.AMSOIL synthetic lubricants have expanded the boundaries of lubrication science and redefined the performance possibilities of modern machinery and engines.

AMSOIL will save you money and give you the peace of mind that comes from using the best. Today’s engines produce more power from a smaller plant with a smaller radiator and a smaller volume of oil to cool and lubricate them. They need more protection from heat than conventional oils give them. Conventional oils keep engines from failing most of the time, but there’s a big difference between marginal failure prevention and the total wear protection that AMSOILdelivers!


Provides 75 Percent More Engine Protection
Against Horsepower Loss and Wear**

Superior Stability
Superior Wear Protection
Superior Fluidity
Superior Overall Economy
Superior Oxidation Resistance
Superior Operating Temperature Range
Superior Fuel Economy

RD50

* Read or Download the AMSOIL Product Recommendation and Drain Interval Chart*

*Read or Download AMSOIL TSB Outlining Lubrication Requirements of Flat Tappet Camshaft Engines and Recommended AMSOIL Synthetic Motor Oils for Optimum Protection*

*Warranties and AMSOIL*

**To develop a way to clearly establish AMSOIL Synthetic Motor Oil as the top choice for superior wear protection, AMSOIL Signature Series 5W-30 Synthetic Motor Oil was subjected to the 100-hour Sequence IIIG Engine Test (ASTM D 7320), an industry-standard test designed to evaluate motor oil in several key performance areas. It must be passed to meet the API SN and ILSAC GF-5 motor oil specifications. The laboratory that performed the test was instructed to DOUBLE the test to 200 hours. Signature Series not only passed the double-length test, it did so with flying colors. See complete results in the Double-Length Sequence IIIG Engine Test Study listed above, or click here.

Signature Series Synthetic Motor Oils

AMSOIL Synthetic Signature Series SAE 0W-20 Motor Oil

AMSOIL Synthetic Signature Series Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. AMSOIL combined the industry premier synthetic technology and additives into a light viscosity formulation that withstands high temperatures and delivers outstanding fuel economy and cold temperature performance. AMSOIL Synthetic Signature Series SAE 0W-20 Motor Oil replaces SAE 5W-20 and is recommended for extended drain intervals according to AMSOIL service interval guidelines, which is 25,000 miles or 1 year in most applications. AMSOIL Synthetic Signature Series SAE 0W-20 Motor Oil delivers the best possible engine protection, cleanliness and performance over extended drain intervals, reducing vehicle maintenance and waste oil disposal costs, and is designed to maximize energy efficiency for improved fuel economy. AMSOIL Synthetic Signature Series SAE 0W-20 Motor Oil is a shear stable formulation with a high viscosity index, and also has a very low volatility rate, making it excellent at controlling volatility related oil consumption and emissions. And unlike conventional oils, AMSOIL Synthetic Signature Series SAE 0W-20 Motor Oil contains no wax.

Product Code: ASM

AMSOIL Synthetic Signature Series SAE 5W-20 Motor Oil

AMSOIL Signature Series Synthetic SAE 5W-20 Motor Oil is designed to maximize energy efficiency for improved fuel economy, and delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It withstands the stress of higher horsepower, higher heat and complicated emissions control systems. Unlike conventional oils, its uniform molecular structure helps it flow more freely and reduce friction between metal surfaces. Anti-friction additives are included to further improve energy efficiency. Up to 25,000 miles/1 year extended drain interval.

Product Code: ALM

AMSOIL Signature Series Synthetic 0W-30 Motor Oil

AMSOIL Signature Series SAE 0W-30 Synthetic Motor Oil is the industry benchmark in lubrication technology. Engineered with the world’s finest synthetic base oils and high performance additives, AMSOIL Signature Series 0W-30 is designed for those who demand the absolute best in motor oil performance. This new and exclusive extended drain formulation delivers superior engine protection and maximum fuel economy.  Personally endorsed by AMSOIL founder and president Al Amatuzio, each bottle bears his signature and describes how he developed the first API qualified synthetic motor oil, thereby launching the synthetic motor oil industry. AMSOIL Synthetic Signature Series SAE 0W-30 is a premium grade synthetic motor oil that exceeds the requirements of modern, high-performance engines and older engines, replacing other SAE 0W-30, 5W-30 and 10W-30 motor oils, and is recommended for extended drain intervals in normal service up to 25,000 miles or one year.

Product Code: AZO

AMSOIL Synthetic Signature Series SAE 5W-30 Motor Oil

AMSOIL 100% Synthetic Signature Series SAE 5W-30 Motor Oil is designed to provide maximum benefits in gasoline-fueled engines. It exceeds the most demanding world-wide performance standards and exceeds warranty requirements for all domestic and imported passenger car engines, both turbo-charged and non-turbo-charged. AMSOIL Synthetic Signature Series SAE 5W-30 Motor Oil is engineered to outperform all conventional gasoline engine motor oils and reduces heat, friction and wear for maximum power, performance and fuel efficiency. It is a clean engine formula and resists high temperature break down that forms sludge and varnish. As a result, AMSOIL Synthetic Signature Series SAE 5W-30 Motor Oil lasts longer and offers better protection. It is also ideal for hot and cold climates, and recommended for all gasoline engines up to 25,000-mile or 1-year drain intervals. Recommended for GM dexos 1™ applications.

Product Code: ASL

AMSOIL Synthetic Signature Series SAE 10W-30 Motor Oil

AMSOIL 100% Synthetic Signature Series SAE 10W-30 Motor Oil is designed to provide maximum benefits in gasoline-fueled engines. AMSOIL Synthetic Signature Series SAE 10W-30 Motor Oil resists high temperature degradation and flows freely in cold conditions for superior protection against engine wear. It also provides maximum power and improved fuel efficiency, and withstands the stress of higher horsepower, higher heat and complicated emission control systems. AMSOIL Synthetic Signature Series SAE 10W-30 Motor Oil delivers long-lasting performance and protection for up to 25,000-mile or 1-year drain intervals.

Product Code: ATM

AMSOIL Synthetic Signature Series SAE 0W-40 Motor Oil

AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. The culmination of more than 40 years of expertise, its exclusive formulation raises the bar for motor oil performance. This product is specified for API SN, SM…Chrysler MS-12633, MS-10725, MS-10850; Nissan GT-R®.

Product Code: AZF

AMSOIL SAE 5W-50 Signature Series Synthetic Motor Oil

AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It is an API SN, SM motor oil, and specifically recommended for Ford WSS-M2C931-C (Mustang).

Product Code: AMR

XL Synthetic Motor Oils

AMSOIL XL Extended Life Synthetic Motor Oils provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. Formulated with extended-drain boost technology, AMSOIL XL Synthetic Motor Oils provide superior performance for up to 10,000-miles/six months, or longer when recommended in owner’s manuals or indicated by electronic oil life monitoring systems. Formulated with friction modifiers, AMSOIL XL Synthetic Motor Oils are fuel-efficient oils that reduce friction-related energy loss. They provide better fuel economy compared to conventional, non-fuel-efficient motor oils.

Cost-conscious motorists, business owners and fleet managers benefit from the extended drain intervals and wear protection of AMSOIL XL Synthetic Motor Oils. While frequent oil changes are expensive, time consuming and inconvenient, longer drain intervals reduce costs and environmental impact, while increased wear control can reduce maintenance costs. With AMSOIL XL Synthetic Motor Oils, motorists realize the convenience and cost savings of extended drain intervals while also providing vehicles with maximum protection. AMSOIL XL Synthetic Motor Oils provide an extra level of performance and protection for motorists extending drain intervals beyond 3,000 miles.

AMSOIL XL Series Synthetic SAE 0W20 Motor Oil

These API-certified XL Series Synthetic Motor Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications. AMSOIL Synthetic Extended Life XL Synthetic.

Product Code: XLZ

AMSOIL XL Synthetic Extended Life SAE 5W-20 Motor Oil

These API-certified XL Series Synthetic Motor Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications. AMSOIL Synthetic Extended Life XL Synthetic.

Product Code: XLM

AMSOIL XL Synthetic Extended Life SAE 5W-30 Motor Oil

These API-certified XL Series Synthetic Motor Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications. AMSOIL Synthetic Extended Life XL Synthetic.

Product Code: XLF

AMSOIL XL Synthetic Extended Life SAE 10W-30 Motor Oil

These API-certified XL Series Synthetic Motor Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications. AMSOIL Synthetic Extended Life XL Synthetic.

Product Code: XLT

AMSOIL XL Synthetic Extended Life SAE 10W-40 Motor Oil

These API-certified XL Series Synthetic Motor Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications. AMSOIL Synthetic Extended Life XL Synthetic.

Product Code: XLO

OE Synthetic Motor Oils

AMSOIL OE Synthetic Motor Oils are specially formulated for the longer oil change intervals recommended by OEM vehicle manufacturers today. AMSOIL OE Synthetic Motor Oils help provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. The oil drain interval recommendations for many of today’s vehicles extend well beyond the traditional 3,000-mile interval, some up to 12,000 miles with electronic oil monitoring systems. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval. AMSOIL OE Synthetic Motor Oils provide excellent protection and performance for the entire length of the original equipment manufacturer’s (OEM) recommendation.

AMSOIL OE Synthetic SAE 0W20 Motor Oil

“AMSOIL OE Synthetic Motor Oils are specially formulated for the longer oil change intervals recommended by OEM vehicle manufacturers today. AMSOIL OE Synthetic Motor Oils help provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. The oil drain interval recommendations for many of today’s vehicles extend well beyond the traditional 3,000-mile interval, some up to 12,000 miles with electronic oil monitoring systems. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval. AMSOIL OE Synthetic Motor Oils provide excellent protection and performance for the entire length of the original equipment manufacturer’s (OEM) recommendation.

AMSOIL OE Synthetic Motor Oils are excellent for use in all types of gasoline-fueled vehicles. These API-Certified OE Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications.”

Product Code: OEZ

AMSOIL OE Synthetic SAE 5W20 Motor Oil

“AMSOIL OE Synthetic Motor Oils are specially formulated for the longer oil change intervals recommended by OEM vehicle manufacturers today. AMSOIL OE Synthetic Motor Oils help provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. The oil drain interval recommendations for many of today’s vehicles extend well beyond the traditional 3,000-mile interval, some up to 12,000 miles with electronic oil monitoring systems. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval. AMSOIL OE Synthetic Motor Oils provide excellent protection and performance for the entire length of the original equipment manufacturer’s (OEM) recommendation.

AMSOIL OE Synthetic Motor Oils are excellent for use in all types of gasoline-fueled vehicles. These API-Certified OE Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications.”

Product Code: OEM

AMSOIL OE Synthetic SAE 5W30 Motor Oil

“AMSOIL OE Synthetic Motor Oils are specially formulated for the longer oil change intervals recommended by OEM vehicle manufacturers today. AMSOIL OE Synthetic Motor Oils help provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. The oil drain interval recommendations for many of today’s vehicles extend well beyond the traditional 3,000-mile interval, some up to 12,000 miles with electronic oil monitoring systems. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval. AMSOIL OE Synthetic Motor Oils provide excellent protection and performance for the entire length of the original equipment manufacturer’s (OEM) recommendation.

AMSOIL OE Synthetic Motor Oils are excellent for use in all types of gasoline-fueled vehicles. These API-Certified OE Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications.”

Product Code: OEF

AMSOIL OE Synthetic SAE 10W30 Motor Oil

“AMSOIL OE Synthetic Motor Oils are specially formulated for the longer oil change intervals recommended by OEM vehicle manufacturers today. AMSOIL OE Synthetic Motor Oils help provide better wear control, high- and low-temperature protection and increased fuel economy compared to conventional oils. The oil drain interval recommendations for many of today’s vehicles extend well beyond the traditional 3,000-mile interval, some up to 12,000 miles with electronic oil monitoring systems. Its advanced synthetic technology resists chemical breakdown for maximum wear protection (and peace of mind) well beyond the traditional 3,000-mile oil change interval. AMSOIL OE Synthetic Motor Oils provide excellent protection and performance for the entire length of the original equipment manufacturer’s (OEM) recommendation.

AMSOIL OE Synthetic Motor Oils are excellent for use in all types of gasoline-fueled vehicles. These API-Certified OE Oils have been designed to meet the new API SN, ILSAC GF-5, and GM dexos1™ (SAE 5W30 viscosity) specifications, in addition to many other North American, European and Japanese specifications.”

Product Code: OET

European Formula Synthetic Motor Oils

AMSOIL Synthetic European Formula SAE 5W30 Motor Oil

AMSOIL European Car Formula 5W-30 Low-SAPS Synthetic Motor Oil provides exceptional performance and protection for high-performance European vehicles. Its low-viscosity formulation maximizes fuel efficiency without compromising engine protection, while meeting strict European performance requirements for gasoline and direct-injection diesel engines calling for a 5W-30 oil. Formulated with low sulfated ash, phosphorus and sulfur (SAPS), AMSOIL European Car Formula 5W-30 Synthetic Motor Oil complies with modern emissions systems to provide optimum life and performance.

Product Code: AEL

AMSOIL Synthetic SAE 5W-40 European Formula Engine Oil

AMSOIL European Car Formula 5W-40 Mid-SAPS Synthetic Motor Oil is specially formulated for the lubrication needs of modern European gasoline and diesel cars and light trucks. Formulated with advanced AMSOIL synthetic base stocks, premium additives and a 5W-40 viscosity rating, AMSOIL European Car Formula 5W-40 Synthetic Motor Oil is highly versatile for multiple applications. Its mid sulfated ash, phosphorus and sulfur (SAPS) formulation provides excellent protection for emissions systems. AMSOIL European Car Formula Synthetic Motor Oil contains high-quality anti-wear additives and surpasses the tough ACEA oil specifications for high-temperature/highshear viscosity. It provides outstanding protection in high-rpm, hot-running engines and delivers dependable long-term performance for the extended drain intervals set by European automakers.

Product Code: AFL

AMSOIL European Car Formula 0W-40 Full-SAPS Synthetic Motor Oil

AMSOIL European Car Formula Full-SAPS Synthetic Motor Oil is specially formulated for the lubrication needs of European gasoline and diesel cars and light trucks, and delivers outstanding protection against the extremely high temperatures produced by turbochargers. Its full sulfated ash, phosphorus and sulfur (SAPS) formulation provides excellent protection and performance for a wide range of vehicles. The broad 0W-40 viscosity rating, low volatility (burn-off) and wax-free nature of AMSOIL European Car Formula make it excellent for hot and cold temperatures. It helps reduce engine wear, control oil thickening and provide easier cold starts. AMSOIL European Car Formula contains high-quality anti-wear additives and surpasses tough vehicle-manufacturer oil specifications. It provides outstanding protection in high-rpm, hot-running engines and delivers dependable long-term performance for the extended drain intervals recommended by European vehicle manufacturers.

Product Code: EFO

AMSOIL European Car Formula 5W40 Full SAPS Synthetic Motor Oil

Full-SAPS Formulation for Maximum Engine Protection. AMSOIL European Car Formula 5W-40 Full-SAPS Synthetic Motor Oil is specially formulated for the lubrication needs of European gasoline and diesel cars and light trucks. Its full sulfated ash, phosphorus and sulfur (SAPS) formulation provides excellent protection and performance for a wide range of vehicles.AMSOIL European Car Formula contains high-quality anti-wear additives and surpasses the tough ACEA oil specifications for high-temperature/high-shear (HT/HS) viscosity. It provides outstanding protection in high-rpm, hot-running engines and delivers dependable long-term performance for the extended drain intervals recommended by European vehicle manufacturers.

Product Code: EFM

Premium Protection Synthetic Motor Oils

AMSOIL Synthetic Premium Protection SAE 10W-40 Motor Oil

AMSOIL Synthetic Premium Protection SAE 10W-40 Motor Oil is specially formulated to provide superior protection and performance in a wide variety of demanding applications including large and small gasoline or diesel engines in cars, motorcycles, trucks, motorhomes, maintenance equipment, heavy equipment, street rods and marine applications. It is ideal for high mileage vehicles and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off-road use. It also provides the extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs. AMSOIL Synthetic Premium Protection SAE 10W-40 Motor Oil is also ideal for motorcycles, maintenance equipment and other wet clutch transmission applications.

Product Code: AMO

AMSOIL Synthetic Premium Protection SAE 20W-50 Motor Oil

AMSOIL Synthetic Premium Protection SAE 20W-50 Motor Oil is designed to provide maximum benefits in gasoline and diesel engines. Formulated for use in both gasoline and diesel engines, this premium synthetic lubricant offers multi-functionality and excellent wear protection. Ideal for applications where the extra protection of a higher viscosity oil is desired. It is ideal for high mileage vehicles with flat-tappet cams and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off road use. AMSOIL Premium Protection Oil resists oxidation, neutralizes acids, inhibits corrosion, reduces wear and protects against deposits. It provides the extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs.

Product Code: ARO

Z-ROD™ Synthetic Motor Oils

AMSOIL Z-ROD SAE 10W-30 Synthetic Motor Oil

AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage. Z-ROD Synthetic Motor Oil is designed to perform on the street and protect during storage. The lifters and cam lobes on flat-tappet camshafts common to classic and high performance vehicles slide rapidly against one another, producing high friction and heat. The friction between the two components can eventually wear down the cam and affect valve operation, ultimately resulting in lost engine power and reduced efficiency. In addition, these areas are splash-lubricated rather than pressure lubricated like other areas of the engine, which adds extra strain on anti-wear additives like the zinc and phosphorus in zinc dialkyldithiophosphate (ZDDP). Read or download AMSOIL TSB: MO-2007-08-08 Rev. 5-11 regarding this phenomenon.

Product Code: ZRT

AMSOIL Z-ROD SAE 20W50 Synthetic Motor Oil

AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage. Z-ROD Synthetic Motor Oil is designed to perform on the street and protect during storage. AMSOIL Z-ROD Synthetic Motor Oil is formulated with high levels of ZDDP to protect flat-tappet cams, lifters, rockers and other areas susceptible to wear. Its high-zinc, high-phosphorus formulation provides the extra wear protection these critical splash-lubricated components require. Read or download AMSOIL TSB: MO-2007-08-08 Rev. 5-11 regarding this phenomenon.

Product Code: ZRF

Dominator® Synthetic Racing Oils

AMSOIL Dominator Synthetic 5W-20 Racing Oil

AMSOIL Dominator® Synthetic 5W-20 Racing Oil (RD20) provides superior performance and maximum protection in high-performance and racing applications. Its shear-stable formulation is engineered to provide maximum horsepower without sacrificing engine protection. Dominator Synthetic 5W-20 Racing Oil provides straight-grade protection in a multi-grade formulation. AMSOIL Dominator Synthetic Racing Oil features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection. Designed for maximum durability, it ensures critical engine components are protected for the duration of the race. The low-viscosity formulation and robust additive package of Dominator 5W-20 make it ideal for use as a high-strength qualifying oil. In addition, its light viscosity makes it ideal for high-performance tuner cars and sub-compact vehicles.

Product Code: RD20

AMSOIL Dominator Synthetic 10W-30 Racing Oil

AMSOIL Dominator® Synthetic 10W-30 Racing Oil (RD30) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 10W-30 Racing Oil delivers superior performance and maximum protection in extreme conditions. Its shear-stable formulation was engineered to provide maximum horsepower without sacrificing engine protection. Dominator Synthetic 10W-30 Racing Oil provides straight-grade protection in a multi-grade formulation. In addition, its high levels of zinc and phosphorus additives make it ideal for street rods, muscle cars and other vehicles with flat-tappet cams.

Product Code: RD30

AMSOIL Dominator Synthetic 15W-50 Racing Oil

AMSOIL Dominator® Synthetic 15W-50 Racing Oil (RD50) provides superior performance and maximum protection in high-performance and racing applications. Formulated to withstand the elevated RPM, high temperatures and shock-loading common to racing applications, Dominator Synthetic 15W-50 Racing Oil delivers superior performance and maximum protection in extreme conditions. Dominator Synthetic 15W-50 Racing Oil provides straight-grade protection in a multi-grade formulation, and features an additive package heavily fortified with zinc and phosphorus for superior long-term wear protection. Designed for maximum durability, it ensures critical engine components are protected for the duration of the race. Protection from start-up to the checkered flag!

Product Code: RD50

AMSOIL Break-In Oil SAE 30

AMSOIL Break-In Oil is an SAE 30 viscosity grade oil formulated without friction modifiers to allow for quick and efficient piston ring seating in new and rebuilt high-performance and racing engines. It contains zinc and phosphorus anti-wear additives to protect cam lobes, lifters and rockers during the critical break-in period when wear rates are highest, while its increased film strength protects rod and main bearings from damage. AMSOIL Break-In Oil is designed to increase compression, horsepower and torque for maximum engine performance. Rings are quickly seated while protecting critical parts from wear.

Product Code: BRK

Break-In Oil

AMSOIL Break-In Oil SAE 30

AMSOIL Break-In Oil is an SAE 30 viscosity grade oil formulated without friction modifiers to allow for quick and efficient piston ring seating in new and rebuilt high-performance and racing engines. It contains zinc and phosphorus anti-wear additives to protect cam lobes, lifters and rockers during the critical break-in period when wear rates are highest, while its increased film strength protects rod and main bearings from damage. AMSOIL Break-In Oil is designed to increase compression, horsepower and torque for maximum engine performance. Rings are quickly seated while protecting critical parts from wear.

Product Code: BRK

Formula 4-Stroke® Synthetic Motor Oils

Four-stroke gasoline engines have long been a mainstay of the general marine industry. They have succeeded in reducing emissions and increasing fuel efficiency, and they have also been a hit with consumers. When four-stroke outboard motors were introduced to the market, manufacturers recommended either their own specially formulated oil or an API SG or SL automotive oil. However, because the specific lubrication requirements of automobiles and outboard motors are different, it soon became apparent that four-stroke outboard motors would require their own oil specification. This standard, entitled FC-W, was released by the National Marine Manufacturers Association (NMMA) in August 2004.

FCWLogoAMSOIL WCF and WCT are both NMMA Certified, demonstrate outstanding performance, and exceed the NMMA “FC-W” (Four Cycle – Water) specification requirements:
NMMA Registration #FB-30010B 10W-40
NMMA Registration #FB-30011B 10W-30

AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is certified by the nmma_logo CATNational Marine Manufacturers Association (NMMA) for use in four-stroke outboards, inboards, stern-drives (inboard/outboards) and PWC. This high-quality oil demonstrates outstanding performance and exceeds the NMMA “FC-W” (Four Cycle – Water) specification requirements.

NMMA FC-W (CAT)® Registration Number: FC-11825T

AMSOIL Synthetic Formula 4-Stroke SAE 10W-30 Marine Motor Oil NMMA Certified

AMSOIL Formula 4-Stroke® Marine Synthetic Motor Oils are premium quality synthetic formulations engineered for the harsh operating conditions of marine environments. They withstand the intense mechanical activity of continuous, high RPM operation to deliver superior viscosity protection. Formula 4-Stroke® Marine Synthetic Motor Oils are specially fortified with a heavy treatment of advanced additives that protect motors against wear, rust and deposits, and they excel in both high horsepower applications and all-day trolling conditions. These high quality oils demonstrate outstanding performance, exceeding the NMMA “FC-W” (Four Cycle – Water) specification requirements. Formula 4-Stroke® Marine Synthetic Motor Oils fulfill the warranty requirements of four-stroke outboard motor manufacturers: NMMA Registration #FB-30011B covers the SAE 10W-30.

Product Code: WCT

AMSOIL Synthetic Formula 4-Stroke SAE 10W-40 Marine Motor Oil NMMA Certified

AMSOIL Formula 4-Stroke® Marine Synthetic Motor Oils are premium quality synthetic formulations engineered for the harsh operating conditions of marine environments. They withstand the intense mechanical activity of continuous, high RPM operation to deliver superior viscosity protection. Formula 4-Stroke® Marine Synthetic Motor Oils are specially fortified with a heavy treatment of advanced additives that protect motors against wear, rust and deposits, and they excel in both high horsepower applications and all-day trolling conditions. These high quality oils demonstrate outstanding performance, exceeding the NMMA “FC-W” (Four Cycle – Water) specification requirements. Formula 4-Stroke® Marine Synthetic Motor Oils fulfill the warranty requirements of four-stroke outboard motor manufacturers: NMMA Registration #FB-30010B covers the 10W-40.

Product Code: WCF

AMSOIL 25W-40 Synthetic Blend Marine Engine Oil

Engine performance and reliability are key to a successful day fishing or boating. High-rpm operation and constant exposure to water, however, invite engine wear and formation of rust and corrosion, reducing engine performance and life. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil guards against wear while delivering excellent protection against rust and corrosion. AMSOIL 25W-40 Synthetic Blend Marine Engine Oil is Warranty Secure®, keeping your factory warranty intact. Use in gasoline-fueled four-stroke inboards, outboards, inboard/outboards and personal watercraft that require any of the specifications listed below, including those made by Mercury* and Mercruiser*. It is the high-performance upgrade for manufacturer-branded products calling for:
  • API SM
  • NMMA FC-W Catalyst Compatible
Product Code: WCMQT

Briggs & Stratton Synthetic 4T Racing Oil

Stock and modified small-displacement racing engines are subjected to extreme heat and elevated rpm that literally tear apart inferior oils. Viscosity loss and oil foaming can result, inviting wear and catastrophic engine failure. AMSOIL combined its extensive experience formulating high-performance synthetic lubricants with the engine-building expertise of Briggs & Stratton® to develop an oil specifically designed to help racers elicit the most horsepower and longest life from their engines. Synthetic 4T Racing Oil is proven in the lab and on the track to provide increased performance in kart, junior drag, quarter midget and other racing applications. It offers benefits other oils simply can’t match.

Product Code: GBS2960

AMSOIL Synthetic Formula 4-Stroke PowerSports 0W-40 Motor Oil

AMSOIL Synthetic Formula 4-Stroke® PowerSports Motor Oil is specially formulated for ATVs, UTVs, snowmobiles and other power sports applications. Its broad viscosity range and wax-free formulation make it excellent for use in both hot and cold temperature extremes. As an SAE 40 weight motor oil, AMSOIL Synthetic Formula 4-Stroke® PowerSports Motor Oil provides outstanding protection for hot operating engines, while its 0W rating and -60°F pour point ensure easy cranking, excellent cold weather starting and quick post-startup protection. AMSOIL Synthetic Formula 4-Stroke® PowerSports Motor Oil is an extreme temperature lubricant that provides outstanding performance in high performance, recreational or work/utility engines.

Product Code: AFF

AMSOIL Synthetic SAE 10W-30 Small Engine Oil

Commercial Grade

Formulated to outperform passenger-car/light-truck oils, AMSOIL Synthetic Small-Engine Oil protects against wear, deposits and oil consumption in over-worked, under-maintained small engines professionals rely on to make a living.

Product Code: ASE

AMSOIL Synthetic 10W-40 ATV/UTV Engine Oil

AMSOIL Synthetic ATV/UTV Motor Oil is formulated to deliver upgraded performance for hard-working and performance ATVs and UTVs. AMSOIL synthetic technology protects hot, high-revving engines against wear. AMSOIL Synthetic ATV/UTV Motor Oil underwent on-track testing in the ATVs and UTVs of AMSOIL-sponsored professional riders in the AMSOIL GNCC Series. It is fine-tuned for outstanding wear protection and consistent clutch feel. AMSOIL 10W-40 Synthetic ATV/UTV Motor Oil is recommended for use in ATVs and UTVs that require a 10W-40 motor oil, including those made by Kawasaki®, Suzuki®, Can-Am®, Honda®, Yamaha®, Kubota® and John Deere®.

Product Code: AUV40

AMSOIL Synthetic 5W-50 ATV/UTV Engine Oil

Aggressive riding and tackling tough terrain place additional stress on the engine. Increased heat generated during severe-duty operation causes oils designed for standard service to break down sooner, increasing the risk for wear. AMSOIL Synthetic ATV/UTV Motor Oil’s synthetic technology delivers reserve protection against heat. It provides reliable wear protection and aids in cooling shrouded engines. AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil provides superior protection during hot summers and cold winters. Its durable synthetic design makes it ideal for applications calling for either 5W-50 or 10W-50 oils. AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil is formulated specifically for use in Polaris® Ranger®, RZR® and Sportsman® UTVs and ATVs. It offers a cost-effective, high-performance alternative to OEM-branded fluids.

Product Code: AUV50

Dirt Bike Synthetic Motorcycle Oils

AMSOIL Synthetic Dirt Bike Oils

Official oil of Monster Energy Supercross. Engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. AMSOIL exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

Product Code: DB40

AMSOIL Synthetic 10W-50 Dirt Bike Oil

Official oil of Monster Energy Supercross. Engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. AMSOIL exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

Product Code: DB50

AMSOIL Synthetic 10W-60 Dirt Bike Oil

Official oil of Monster Energy Supercross. Engineered to deliver the performance attributes most requested by on- and off-track dirt bike riders, including consistent clutch feel. Consistent clutch feel is the result of “friction durability,” so whether deep into a race or deep in the woods, riders can feel confident their clutch will perform from start to finish. AMSOIL exclusive advanced chemistry provides outstanding engine reliability for worry-free operation under severe conditions.

Product Code: DB60

Synthetic Metric Motorcycle Oils

AMSOIL Synthetic Advanced SAE 10W-30 Motorcycle Oil

AMSOIL Synthetic Advanced 10W-30 Motorcycle Oil is multi-functional and fulfills the requirements of both domestic and foreign motorcycles, outperforming other conventional and synthetic motorcycle oils. It is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage. AMSOIL Synthetic Advanced 10W-30 Motorcycle Oil keeps engines running cool by effectively reducing friction and heat, and it contains a heavy treatment of anti-wear additives to reduce wear regardless of the operating conditions. API SG, SL/CF, CG-4 • JASO MA/MA2 • ISO-L-EMA2 • SAE 80, API GL-1

Product Code: MCT

AMSOIL Synthetic Metric SAE 10W-40 Motorcycle Oil

AMSOIL Synthetic Advanced SAE 10W-40 Motorcycle Oil is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. It is specially formulated to excel in all areas unique to motorcycles, is multi-functional and fulfills the requirements of both domestic and foreign motorcycles. It outperforms other conventional and synthetic motorcycle oils. Designed for high performance engines and transmissions. API SG, SL/CF, CG-4: JASO MA/MA-2; ISO-L-EMA2; API GL-1.

Product Code: MCF

Synthetic V-Twin Motorcycle Oils

AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil

High-Performance Lubricant for Engines and Transmissions. A premium oil designed for those who demand the absolute best lubrication for their motorcycles. It is the result of extensive research and is specially formulated to excel in all areas unique to motorcycles, including the high temperatures of air-cooled engines, wet-clutch lubrication, extreme-pressure regions of gears and chains and rust protection. AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil is multi-functional and engineered for Victory® and model-year 2013 and newer Indian® motorcycles. API SM, JASO MA, API GL-1

Product Code: MVI

AMSOIL Synthetic Advanced SAE 20W-50 Motorcycle Oil

AMSOILSynthetic Advanced Formula SAE 20W-50 Motorcycle Oil is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. It is specially formulated to excel in all areas unique to motorcycles, including Harley Davidson® V-twins, is multi-functional and fulfills the requirements of both domestic and foreign motorcycles. It out performs other conventional and synthetic motorcycle oils. A high-performance lubricant for engines, transmissions and primary chaincases. API SG, SL/CF, CG-4; JASO MA/MA2; ISO-L-EMA2; API GL-1.

Product Code: MCV

AMSOIL Synthetic SAE 60 Motorcycle Oil

AMSOIL Synthetic SAE 60 Motorcycle Oil is a premium oil designed for those who demand the absolute best lubrication for their motorcycles. AMSOIL Motorcycle Oil is the result of extensive research, and it is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet-clutch lubrication, extreme-pressure regions of gears and rust common to short drives and storage. AMSOIL SAE 60 Motorcycle Oil features superior heat resistance and wear protection. It is shear-stable and helps maintain proper oil pressure in elevated temperatures. AMSOIL Synthetic SAE 60 Motorcycle Oil stops viscosity breakdown (loss), protects gears and chains, and meets SAE 140, API GL-1 gear oil requirements. It is multi-functional and fulfills the requirements of both domestic and foreign motorcycles. AMSOIL Synthetic SAE 60 Motorcycle Oil is recommended for early-model air-cooled V-Twin engines where a 60-weight motor oil is specified. SAE 60 motor oils are commonly used in Harley-Davidson® Knucklehead, Panhead, Shovelhead and big-bore motorcycles. AMSOIL Synthetic SAE 60 Motorcycle Oil meets API SG, SL/CF; API GL-1; JASO MA/MA2 and ISO-L-EMA2, and outperforms other conventional and synthetic motorcycle oils.

Product Code: MCS

Check out AMSOIL Recommendations for Harley-Davidson Motorcycles

Recommendations for Harley-Davidson

Synthetic Scooter Oil

AMSOIL Synthetic Formula 4-Stroke SAE 10W-40 Scooter Oil

AMSOIL Synthetic Formula 4-Stroke® SAE 10W-40 Synthetic Scooter Oil is formulated specifically to meet the special needs of today’s high-tech air- and water-cooled fourstroke motorized scooters, offering unsurpassed wear protection and friction reduction for longer equipment life and cooler operating temperatures. Its exceptional shear stability ensures consistent viscosity protection and provides additional protection for transmissions and gear boxes, while its friction modifier-free formulation ensures wet clutch compatibility and smooth clutch operation. A special anti-corrosion additive package provides long-term protection during periods of inactivity and storage.

Product Code: ASO

Synthetic Diesel Motor Oils

AMSOIL Signature Series Max-Duty Synthetic SAE 5W-40 Diesel Oil API CK-4

Protect your investment in diesel power and confidently extend drain intervals with AMSOIL’s top-grade synthetic diesel oil. AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 6X better wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222. Advanced synthetic technology provides excellent viscosity control and outstanding extreme-temperature performance, while minimizing oil consumption. The result: protection that’s boosted to the max.

Product Code: DEO

AMSOIL Signature Series Max-Duty Synthetic SAE 15W-40 Diesel Oil API CK-4

Protect your investment in diesel power and confidently extend drain intervals with AMSOIL’s top-grade synthetic diesel oil. AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 6X better wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222. Advanced synthetic technology provides excellent viscosity control and outstanding extreme-temperature performance, while minimizing oil consumption. The result: protection that’s boosted to the max.

Product Code: DME

Maximum Protection Against Shear and Fuel Dilution

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Resisting shear and maintaining protective viscosity in the harsh operating conditions of diesel engines is challenge enough for many diesel oils, but maintaining viscosity in the face of fuel dilution is another challenge altogether. Although recent fuel dilution issues forced AMSOIL to adjust its Premium API CJ-4 Synthetic Diesel Oil drain interval recommendations in 2007-2010 Dodge 6.7L, Ford 6.4L and GM 6.6L light-duty turbo-diesel pickups and 2007-2009 on-highway Caterpillar C13 and C15 engines to the manufacturer-recommended drain intervals, AMSOIL Premium API CJ-4 Synthetic Diesel Oils remain the premium choice for diesel applications.  AMSOIL Premium Diesel Oils resist viscosity loss from both shearing forces and fuel dilution to maintain their protective film strengths, providing superior protection to all diesel engines.

AMSOIL sent five competitive synthetic CJ-4 5W-40 diesel oils to an independent laboratory for shear stability testing.  Knowing the tough environment that diesels present to lubricating oils, AMSOIL doubled the standard Kurt Orbahn 90-cycle test and had the oils tested for 180 cycles.  Samples were then contaminated with 2 and 4 percent ultra low sulfur diesel (ULSD) fuel.  Even after being shear tested for twice the industry standard and contaminated with 4 percent fuel dilution, AMSOIL maintained viscosity and was the only oil to stay within an SAE 40 viscosity rating.  As other oils lost viscosity due to shearing forces and fuel dilution, their ability to protect against wear was jeopardized.

Read AMSOIL TSB (Technical Service Bulletin) MO-2009-10-01 Addressing Fuel Dilution Issues in 2007-2010 Light-Duty Turbo-Diesel Pickups 

Read AMSOIL TSB MO-2009-07-01 Addressing Fuel Dilution Issues in 2007-2009 On-Highway Caterpillar C13 and C15 Engines

AMSOIL OE SAE 10W30 Synthetic Diesel Oil

AMSOIL OE Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer’s recommended drain interval. It is a licensed API CJ-4/SN motor oil suitable for both modern and older diesel applications, including those equipped with turbochargers. AMSOIL OE Synthetic Diesel Oil exceeds the higher performance demands of modern engines and withstands the stress of heat, soot and acids to help prevent deposits, wear and corrosion.

Product Code: OEC

AMSOIL Synthetic OE SAE 15W40 Heavy Duty Diesel Motor Oil

AMSOIL OE 15W-40 Synthetic Heavy Duty Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer’s recommended drain interval. It meets API CJ-4 specifications and is suitable for both modern and older diesel applications. AMSOIL OE 15W-40 Synthetic Diesel Oil exceeds the higher performance demands of modern engines and withstands the stress of heat, soot and acids to help prevent deposits, wear and corrosion. While providing premium protection for diesel engines, AMSOIL Synthetic OE 15W-40 Diesel Motor Oil has a lower price point, thus making it cost effective for performance-minded customers who want to change their oil at OEM recommendations, including newer diesel pickups faced with fuel dilution issues. Read AMSOIL TSB MO-2009-07-01 for more information regarding this engine design issue.

Product Code: OED

AMSOIL Synthetic Series 3000 SAE 5W-30 Heavy Duty Diesel Oil

AMSOIL Synthetic Series 3000 SAE 5W-30 Heavy Duty Diesel Oil is a fuel efficient formula delivering extraordinary lubrication in both gasoline and diesel fleets. It is energy efficient for reduced fuel costs by minimizing “drag” associated with high viscosity oils, allowing the engine to operate more freely, maximizing power and fuel economy. Because of its unsurpassed protection against engine wear, its anti-wear performance outperforms SAE 40 diesel and gasoline oils. In addition, AMSOIL Synthetic Series 3000 SAE 5W-30 Heavy Duty Diesel Oil keeps soot particles suspended independently, preventing them from agglomerating to form larger, wear-causing particles. Viscosity increase is minimized, and soot related wear is controlled.

Product Code: HDD

AMSOIL Synthetic SAE 15W-40 Heavy Duty Diesel and Marine Oil

AMSOIL Synthetic SAE 15W-40 Heavy Duty Diesel and Marine oil is the ultimate in diesel engine protection for pre-2007 emission diesel engines. Its specially blended long-life formulation resists oxidation, thermal breakdown, retains viscosity and eliminates sludge and varnish formation. AMSOIL Synthetic SAE 15W-40 Heavy Duty Diesel and Marine Oil’s 12+ TBN chemistry neutralizes acids and controls soot thickening from EGR and blow-by to protect against corrosion, cylinder bore polishing (wear) and varnish and sludge deposits. Designed to deliver 1,000,000 miles in over the road trucks before engine overhaul.

Product Code: AME

AMSOIL Synthetic 10W-30/SAE30 Heavy Duty Diesel Oil

Formulated with premium synthetic base oils that exceed both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements for outstanding performance in modern and older diesel engines. Unlike conventional SAE 30 motor oils, AMSOIL ACD has a naturally high viscosity index and does not contain paraffin (wax). It has a -33° F pour point and qualifies for an SAE 10W, making it an “all season” multi-grade lubricant with a wide operating temperature range. ACD contains premium additives with a high 12 TBN to neutralize acids from blow-by, exhaust gas recirculation (EGR) and high sulfur diesel fuels, while protecting against damaging piston deposits, ring sticking and sludge.

Product Code: ACD

Natural Gas Synthetic Motor Oils

AMSOIL Synthetic Stationary Natural Gas Engine Oil

AMSOIL Synthetic Stationary Natural Gas Engine Oil delivers continuous protection in stationary natural gas engines calling for an SAE 40, low-ash lubricant. Its shear-stable formula qualifies it as a multi-grade 20W-40 so it can be used over a broad ambient temperature range, eliminating the need for seasonal oil changes. AMSOIL Synthetic Stationary Natural Gas Engine Oil is formulated with low sulfated ash to minimize carbon deposits and port blockage, resulting in reduced maintenance and extended equipment life. Advanced anti-wear and anti-scuff protection helps control valve recession and wear on piston rings, cylinder liners and bearings during continuous severe-service operation in stationary natural gas engines. May be used for extended drain intervals when monitored by an oil analysis program. Should NOT be used in automotive engines or vehicular engines that run on propane or natural gas: see AMSOIL Synthetic Vehicular Natural Gas Engine Oil (ANGV) for these applications.

Product Code: ANGS

AMSOIL Synthetic Vehicular Natural Gas Engine Oil SAE 15W-40

AMSOIL Synthetic Vehicular Natural Gas Engine Oil delivers superior protection and performance in natural gas engines calling for an API CF 15W-40 low-ash lubricant. It is formulated specifically to meet the special requirements of natural gas fueled engines used in vehicles and mobile equipment. AMSOIL Synthetic Vehicular Natural Gas Engine Oil has an advanced anti-wear additive system to provide enhanced valve train protection, whether roller or slider followers are used. It is formulated with high levels of zinc and phosphorus to provide outstanding wear protection in mobile engine requiring Cummins CES 20074. AMSOIL Synthetic Vehicular Natural Gas Engine Oil minimizes deposits and valve recession, maintain viscosity, and may be used for extended drain intervals when monitored by an oil analysis program. This product is recommended in mobile applications fueled by compressed natural gas (CNG), liquefied natural gas (LNG) or liquefied petroleum gas (LPG), including transit buses, medium/heavy duty trucks, refuse haulers, school buses and delivery trucks, and for applications where Cummins CES 20074 is required.

Product Code: ANGV