Synthetic Motor Oils
What is synthetic motor oil? AMSOIL synthetic lubricants are chemically engineered to form pure lubricants. They contain no contaminants or molecules that don’t serve a designed purpose. Their versatility and pure, uniform molecular structures impart properties that provide better friction-reduction, optimum fuel efficiency, maximum film strength and extreme-temperature performance conventional lubricants just can’t touch.
Conventional lubricants, on the other hand, are refined from crude oil. Contaminating elements such as sulfur, nitrogen, oxygen and metal components such as nickel or vanadium are inherent to crude oil and cannot be completely removed through the refining process. The oil refining process separates the various types of molecules in the oil by weight, leaving molecules similar in weight but dissimilar in structure, reducing performance.
AMSOIL Synthetics don’t contain the impurities and molecular irregularities inherent to conventional oils. AMSOIL Synthetics’ pure, uniform molecular structures impart properties that provide wear protection, extreme temperature performance and fuel efficiency conventional lubricants just can’t touch – all of which helps you save money with vehicles that run better and last longer.
Get Top Performance & Protection from Virtually Any 4-Cycle Engine
When the first can of API-approved AMSOIL 10W-40 appeared on the market in 1972, recommended for 25,000 miles or 1 year, 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 synthetic lubricants save you money by maximizing fuel economy and reducing oil consumption while providing you the protection and peace of mind that comes from using the best long-mileage motor oil on the market. Today’s engines produce more power from a smaller plant with a much 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 can be a “get by” product that prevents failures most of the time, but there’s a big difference between marginal failure prevention and the total wear protection that AMSOIL delivers!
AMSOIL 100% synthetic motor oils deliver wear protection, engine cleanliness and fuel efficiency conventional oils simply can’t match. They simply help your vehicles run better and last longer.
AMSOIL 100% Synthetic Gasoline Motor Oils
AMSOIL Signature Series 100% Synthetic Gasoline Motor Oil
A New Level of Motor Oil Technology ding here
AMSOIL was founded on innovation, beginning with our introduction of the world’s first API-qualified synthetic motor oil. By ignoring commonly accepted limitations and refusing to stop short of success, we set a new benchmark for lubricant performance. These same principles continue to guide our product development, resulting in Signature Series Synthetic Motor Oil. Signature Series is not only the best oil we have ever made, it’s also better than any competitor oil we have tested. Some may claim that Signature-Series is over-engineered. Perfect. It’s not for everyone. It’s for those who want the absolute best engine protection—and it delivers.
- 75% more engine protection against horsepower loss and wear.1
- 50% more cleaning power vs. AMSOIL OE Motor Oil
- Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
- 28% more acid-neutralizing power than Mobil 1.3
- Trusted by professional engine builders
- Guaranteed protection for up to 25,000 miles or 1 year
1Based on independent testing of AMSOIL Signature Series 0W-20 using the ASTM D6891 standard test.
2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
3Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased in July 2020.
AMSOIL Extended-Life 100% Synthetic Motor Oil
Enhanced Protection for Peace of Mind and Convenience
AMSOIL Extended-Life 100% Synthetic Motor Oil is overbuilt for road warriors so you can confidently drive up to 20,000 miles (32,000 km) or one year, whichever comes first, between oil changes. A proprietary combination of advanced synthetic base oils and a boosted additive package promotes cleanliness and prolonged engine life. AMSOIL Extended-Life protection delivers peace of mind and convenience.
- 37% more cleaning power1 to help keep your engine running smoother, longer.
- Protects against LSPI
- 20,000 miles of guaranteed protection between changes2
1Compared to AMSOIL OE Synthetic Motor Oil.
2Normal Service – Up to 20,000 miles (32,000 km) or one year, whichever comes first, in personal vehicles not operating under severe service.
AMSOIL OE Series 100% Synthetic Motor Oil
Advanced Engine Protection and Performance
OE Synthetic Motor Oil is for mechanics and drivers seeking peace-of-mind protection and exceptional value in synthetic motor oil. It delivers 100% synthetic engine protection for advanced automotive technology, including turbochargers and direct injection. OE is specifically formulated for the longer drain intervals recommended by original equipment (OE) manufacturers.
- Fights sludge and deposits with 100% synthetic formulation.
- 47% more wear protection1 than required by the GM dexos1 Gen 2 specification.
- 100% protection against LSPI2 in the engine test required by the GM dexos1 Gen 2 specification.
1Based on independent testing of OE 0W-20 in the Peugeot TU3M Wear Test as required by the dexos1 Gen 2 specification.
2Based on zero LSPI events in five consecutive tests of AMSOIL OE 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.
AMSOIL 100% Synthetic Hybrid Motor Oil
Advanced Protection for Hybrid Vehicles
The internal combustion engine (ICE) in a hybrid vehicle endures a unique set of challenges. Infrequent engine usage and increased stop/start activity place demands on lubricants not common in traditional ICE vehicles. AMSOIL 100% Synthetic Hybrid Motor Oil is a premium upgrade over vehicle-manufacturer-branded motor oils, delivering purpose-built protection for the hybrid-drive cycle to maximize hybrid engine life, efficiency and performance.
- Specially Formulated For Hybrid Engines
- Superior Sludge & Deposit Control
- Maximizes Fuel Efficiency
- Enhanced Corrosion Protection
- Trusted by professional engine builders
- OEM drain interval
- JASO licensed
AMSOIL 100% Synthetic High-Mileage Motor Oil
Engineered for vehicles with over 75,000 Miles
With rapidly rising new-vehicle pricing and the high cost of repairs, drivers are keeping their vehicles on the road longer than ever. Preventive maintenance that includes high-quality lubricants is key for keeping vehicles safe and dependable for the long haul. AMSOIL 100% Synthetic High-Mileage Motor is designed specifically for the unique demands of high-mileage engines, helping extend the life of your vehicle. It delivers purpose-built protection at a time in your vehicle’s life where it could benefit from more-robust maintenance. It cleans and protects engines with boosted detergency and an additive package that fights oil breakdown and oil leaks.
- Unique chemistry for vehicles with over 75,000 miles
- Boosted detergent and dispersant package
- Enhanced anti-wear additives
- Reduced sludge by 67%,VV demonstrating cleaning power that helps engines last longer and perform better
- Guaranteed Protection For 12,000 Miles/1-Year 1
- JASO licensed
AMSOIL Premium Protection 100% Synthetic Motor Oil
AMSOIL Premium Protection Synthetic Motor Oil is formulated to provide superior protection and performance in a wide variety of demanding applications. Its unique combination of synthetic base oils and a superior additive package results in a formulation that exceeds the requirements of most gasoline or diesel applications that call for 10W-40 or 20W-50 motor oil. Premium Protection Synthetic Motor Oil is ideal for high-mileage vehicles and high-stress vehicles subject to hot temperatures, heavy hauling, trailer pulling or off-road use. It provides the extra anti-wear protection required by engines with flat-tappet cams and high-tension valve springs. AMSOIL Premium Protection Synthetic Motor Oil offers flexibility and performance beyond conventional oils.
- High-zinc formula guards against wear
- Ideal for flat-tappet cams
- Resists deposits to help keep engines clean
- Convenience of use for gas and diesel engines
AMSOIL 100% Synthetic European Motor Oils
Specially Formulated for European Gasoline and Diesel Engines
European performance and styling define a culture of exceptional engineering. AMSOIL matches that devotion to precision with lubricants specially designed for the unique demands of gasoline, diesel and hybrid European vehicles. AMSOIL’s exclusive European formulas feature a precise blend of advanced synthetic base oils and premium additives that deliver exceptional engine protection without harming emissions systems.
- Designed for the unique demands of gasoline, diesel and hybrid European vehicles.
- European formula features precise blend of synthetic base oils and premium additives.
- Exceptional engine protection without harming emissions systems.
AMSOIL 100% Synthetic Z-ROD® Motor Oils
Modern Technology for Classic Cars
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.
- Engineered for classic vehicles
- Helps retain horsepower
- High-zinc formula protects flat-tappet cams, lifters, rockers & other critical components
- Protects against rust during storage
AMSOIL Dominator® Synthetic Racing Motor Oils
Trust the extensive experience of AMSOIL, The First in Synthetics,® to do the best job protecting your race engines.
AMSOIL DOMINATOR® Synthetic Racing Oil is designed to protect high-performance racing applications operating on the ragged edge. DOMINATOR is engineered to withstand the elevated rpm, high temperatures and shock-loading common to racing applications. Its robust formulation is lab-crafted to provide maximum horsepower without sacrificing engine protection and has it been tested and validated by championship-winning race teams. DOMINATOR provides straight-grade protection in a multi-grade formulation.
Multi-viscosity, shear-stable synthetic race formula engineered to maximize power while providing outstanding engine protection. Heavily fortified with zinc and phosphorus additives to protect critical surfaces in extreme conditions. Proprietary friction modifier maximizes power and reduces engine temperatures. Durable additive system is excellent for racing and street engines.
- Formulated specifically for high- performance racing engines
- Robust formulation resists viscosity loss
- Proprietary friction modifier maximizes horsepower & torque
- Fortified with anti-wear additives for extra protection
BRIGGS & STRATTON Synthetic 4T Racing Oil
Specially engineered and formulated by AMSOIL for maximum horsepower and protection without the shortcomings of using automotive, PAG or mineral-based karting oils in a high-revving, air-cooled, splash-lubed environment. Resists rust, corrosion and foaming. Safe for use in gasoline and alcohol-burning stock or modified engines. Formulated by AMSOIL specifically for stock and modified small-displacement air-cooled racing engines and recommended for any four-stroke air-cooled competition engine.
- Tested and validated by Briggs & Stratton and AMSOIL
- Combines the protection of a heavier oil with the performance of a lite oil
- Reduces harmful heat
- Inhibits foam
- Resists corrosion
AMSOIL 100% Synthetic Diesel Motor Oils
AMSOIL Signature Series Max-Duty 100% Synthetic Diesel Motor Oil
Maximum-duty protection for your hardest-working diesel engines
Protect your investment in diesel power and confidently extend drain intervals with our top-grade synthetic diesel oil. AMSOIL Signature Series Max-Duty Synthetic Diesel Oil delivers 6x more wear protection*, giving your diesel the extra protection it deserves. 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.
- Outstanding extreme-pressure protection
- Delivers 6X more wear protection*
- Maintains proper viscosity (thickness)
- Minimizes oil consumption
- Maximizes fuel efficiency
- Excels in extreme temperatures
- Confidently extend drain intervals
*Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation.
AMSOIL Heavy-Duty Diesel Oil
Formulated for Exceptional Diesel Engine Protection
AMSOIL Heavy-Duty Synthetic Diesel Oil is formulated for Hard-working equipment. It is engineered to provide 4X better wear protection*, giving you the edge to keep trucks and equipment operating at peak performance. AMSOIL Heavy-Duty Synthetic Diesel Oil offers outstanding value and provides excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils.
- Delivers 4X more wear protection*
- Minimizes oil consumption
- Excels in extreme temperatures
- Helps keep trucks and equipment operating at peak performance
- Offers outstanding value
*Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation.
AMSOIL 100% Synthetic Diesel Oil for Smaller Diesel Engines
Outstanding Protection for Smaller Diesel Engines
AMSOIL 100% Synthetic Diesel Oil is specifically formulated to protect the efficient diesel power of American diesel pickups, vans, cars and SUVs, giving you the edge to keep your vehicle operating at peak performance. It delivers outstanding value and excellent protection for customers seeking an upgrade over conventional, synthetic-blend or competing synthetic diesel oils
- Outstanding protection for smaller American diesel pickups, vans, cars and SUVs
- Delivers up to 6X more wear protection than required by a leading industry standard*
- Retains viscosity for added engine protection and increased fuel economy
- Excels in hot and cold temperature extremes
- Minimizes oil consumption
*based on third-party testing in the OM646LA cam wear test using 0W-20 as worst-case representation
AMSOIL SAE 15W-40 Heavy-Duty Diesel and Marine Oil
Premium diesel oil providing excellent performance in diesel engines where highly effective control of wear and deposits is vital. Built with heavy-duty dispersant/detergent additives with 12 TBN, Synthetic Heavy-Duty Diesel & Marine Oil neutralizes acids and controls soot thickening from EGR and blow-by to protect against corrosion, cylinder bore polishing (wear) and varnish/sludge deposits. It resists heat and breakdown and is formulated for extended drain intervals.
- Recommended for applications specifying API CI-4+ and prior specifications
- Controls soot and wear
- Reduces oil consumption and emissions
- Delivers maximum engine protection over extended drain intervals
- Provides outstanding protection and performance in temperature extremes
- Try Signature Series Max-Duty 15W-40 for a serious upgrade
AMSOIL Commercial-Grade Diesel Oil
Formulated for Long Engine Life
AMSOIL Commercial-Grade Diesel Oil is an advanced synthetic-blend oil with greater than 50% synthetic content. Specially engineered for commercial equipment, it provides 2x better wear protection*, helping you keep trucks and equipment operating at peak performance. AMSOIL Commercial-Grade Diesel Oil provides outstanding value and excellent protection for customers seeking an upgrade over conventional diesel oils.
- Delivers 2X more wear protection*
- Contains greater than 50% synthetic base oil
- Provides excellent protection for an outstanding value
- Offers an upgrade over conventional diesel oil
AMSOIL 100% Synthetic Motorcycle Oils
AMSOIL 100% Synthetic V-Twin Motorcycle Oil
AMSOIL Synthetic V-Twin Motorcycle Oil is a premium oil designed for those who demand the best protection 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 such as Harley-Davidson* V-twins, wet-clutch lubrication, extreme-pressure regions of gears and chains and rust common to short trips and storage. AMSOIL Synthetic V-Twin Oil is multi-functional and fulfills the requirements of both domestic and foreign motorcycles.
*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.
AMSOIL 100% Synthetic Metric Motorcycle Oil
Advanced synthetic technology protects your bike and your pursuit of freedom.
Excess friction and heat rob high-performance metric sport, cruiser and adventure-bike engines of horsepower and longevity. Engine reliability is just as critical in touring bikes accumulating thousands of miles on the open road. AMSOIL Synthetic Metric Motorcycle Oil is durable and long-lasting. Its superior wet-clutch properties ensure smooth, confident shifts while its robust formulation resists the harmful effects of extreme heat. It controls foam during high-rpm operation and guards against wear for superior engine reliability.
AMSOIL 100% Synthetic Dirt Bike Oil
AMSOIL Synthetic Dirt Bike Oil is engineered to enhance engine performance and reliability in extreme conditions, while delivering superior protection against engine wear.
AMSOIL Synthetic Formula 4-Stroke Scooter Oil
AMSOIL Formula 4-Stroke 10W-40 Synthetic Scooter Oil is formulated specifically to meet the special needs of today’s high-tech air- and water-cooled four-stroke motorized scooters, offering outstanding wear protection and friction reduction for longer equipment life and cooler operating temperatures.
AMSOIL 100% Synthetic ATV/UTV and Powersports Motor Oils
AMSOIL Synthetic ATV/UTV Motor Oil is formulated to deliver upgraded performance for hard-working and high-performance ATVs and UTVs. Its outstanding severe-service formulation allows riders to confidently and safely push their machines to the limit, whether tackling demanding chores around their property or riding aggressively on tough terrain. AMSOIL synthetic technology protects hot, high-revving engines against wear. AMSOIL Synthetic ATV/UTV Motor Oil is Warranty Secure™ and will not void your ATV or UTV warranty. It is a cost-effective, high-performance alternative to original equipment manufacturer (OEM) fluids.
- Severe-Service Engine Protection
- Superior All-Weather Performance
- Confident Clutch Feel
- Wet-Clutch Compatible
AMSOIL 100% Synthetic Small Engine Oils
Commercial Grade
AMSOIL 100% Synthetic Small Engine Oil is specifically engineered to improve small-engine reliability, ensuring your engines are protected even during periods of extended use and deferred maintenance.
- Protects up to 200 hours
- Helps extend engine life
- Rust-inhibited
- Maximizes engine power
- Helps cut maintenance costs
AMSOIL 100% Synthetic and Semi-Synthetic Marine Engine Oils
Formulated specifically for use in four-stroke gasoline-fueled engines used in marine applications.
AMSOIL 100% Synthetic Small Engine Oil is specifically engineered to improve small-engine reliability, ensuring your engines are protected even during periods of extended use and deferred maintenance.
- Excellent high-stress, high-rpm endurance
- Perfect for hardcore anglers and boaters who demand the best protection for their marine engines
- NMMA FC-W Catalyst Compatible
- Increased rust and corrosion protection
AMSOIL 100% Synthetic Stationary and Vehicular Natural Gas Engine Oil
AMSOIL Synthetic Stationary Natural Gas Engine Oil delivers superior protection in stationary natural gas engines that require 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, reducing the need for seasonal oil changes.
AMSOIL Synthetic Vehicular Natural Gas Engine Oil is formulated specifically to meet the special requirements of natural gas fueled engines used in vehicles and mobile equipment. It delivers superior protection and performance in applications calling for a 15W-40 low-ash lubricant.
AMSOIL 100% Synthetic 2-Cycle Motor Oils
For Everything From Racing and High Performance to Marine, Powered Hand Tools and Industrial Equipment
AMSOIL 100% Synthetic Compressor Oil
AMSOIL PC Series Synthetic Compressor Oil, ISO VG 32 to 100, is a long-life, premium compressor lubricant that incorporates the highest quality, thermally stable synthetic oils fortified with premium non-detergent additives for maximum protection at high temperatures. It lasts up to 8,000 hours, effectively reducing maintenance and waste oil disposal costs.
SIROCCO™ is recommended as a direct replacement for PAG compressor oils such as Sullair Sullube 32 and Ingersol-Rand SSR Ultra Coolant. Not recommended for use with Silicone base fluids. Consult AMSOIL for further information.
AMSOIL PC Series Synthetic Compressor Oil
PC Series Synthetic Compressor oil is a long-life, premium compressor lubricant that incorporates the highest quality, thermally stable synthetic oils fortified with premium non-detergent additives for maximum protection at high temperatures. It lasts up to 8,000 hours, effectively reducing maintenance and waste oil disposal costs.
AMSOIL SIROCCO™
SIROCCO™ is recommended as a direct replacement for PAG compressor oils such as Sullair Sullube 32 and Ingersol-Rand SSR Ultra Coolant. Not recommended for use with Silicone base fluids. Consult AMSOIL for further information.
