AMSOIL Synthetic Gear Lube
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More Power, Better Fuel Economy, Less Heat and Better Protection. Bottom Line.

 

   Read Why Gear Lube Needs to be Changed After Break-in

AMSOIL Synthetic EP Gear Lubes Provide State-of-the-Art Technology    Modern vehicles are designed with more horsepower and torque than in years past, allowing them to haul and tow heavier and heavier loads. This results in higher gear loading and hotter running differentials. In addition, factors such as increased interior space and lower floor boards push axles higher into the vehicle's body, reducing air flow and increasing heat. The closer proximity of the axles to the exhaust system also effectively raises heat, while more aerodynamic body styles and air dams result in restricted air flow to the differentials.

    A number of factors cause SUV, pickup truck and van gears to operate under more severe conditions than over-the-road trucks, contributing to increased temperatures, higher gear loading and shorter drain intervals.

  • First, these vehicles have smaller gears that must handle higher loads per square inch of surface area.
  • Second, their smaller sump sizes (and lower volume of gear lube) cannot dissipate heat as well as larger sump sizes.
  • Third, air flow is significantly reduced compared to over-the-road trucks.
  • Fourth, these vehicles are subject to more frequent stop and go driving conditions and are more susceptible to moisture from condensation due to varying temperature fluctuations.

AMSOIL Provides the Solution:

In order to optimize its gear lubes for modern applications, AMSOIL has introduced new, benchmark gear lube formulations.

AMSOIL Synthetic Severe Gear Extreme Pressure Gear Lubes AMSOIL SEVERE GEAR® Synthetic Extreme Pressure Gear Lubes (SAE 75W-90, 75W-110, 75W-140, 190 and 250)
Specially formulated for severe duty applications, AMSOIL SEVERE GEAR® Synthetic Extreme Pressure Gear Lubes are

AMSOIL Severe Gear Prevents Thermal Runaway

The extreme loads, pressures and temperatures experienced by modern vehicles place increased stress on gear lubricants that can lead to a serious condition known as Thermal Runaway. As temperatures in the differential climb upward, gear lubricants lose viscosity and load-carrying capacity. When extreme loads and pressures break the lubricant film, metal-to-metal contact and increased heat occur. This increased friction and heat, in turn, results in further viscosity loss, which further increases friction and heat. As heat spirals upward, viscosity spirals downward. Thermal Runaway is a vicious cycle that leads to irreparable equipment damage from extreme wear, and ultimately catastrophic gear and bearing failure.

 

excellent for vehicles that experience towing, hauling, steep hill driving, commercial use, racing, off-road use, rapid acceleration, stop and go driving and high ambient temperatures. AMSOIL SEVERE GEAR® Gear Lubes are formulated with increased levels of premium quality additives, allowing improved limited-slip and locking differential performance.  

 

And with high viscosity indices, SEVERE GEAR® Gear Lubes provide an extra level of protection at high temperatures. Extra additives provide additional insurance against wear in case of a lubricant film breach. These additives provide an iron sulfide barrier coating that effectively prevents micro-welding that leads to heat and friction. This allows AMSOIL SEVERE GEAR© Gear Lubes to prevent thermal runaway, a phenomenon caused by a lubricant 's inability to control friction and increased heat under high-stress conditions. (Read AMSOIL TSB (Technical Service Bulletin) DT-2008-3-25. By preventing thermal runaway, AMSOIL SEVERE GEAR® Gear Lubes inhibit component damage and rapid lubricant degradation. 

AMSOIL SEVERE GEAR® Synthetic SAE 75W-110 EP Gear Lube provides superior performance and replaces competitors' 75W-110, 75W-90 and 80W-90 gear oils. It delivers better viscosity protection than SEVERE GEAR® 75W-90 and better fuel efficiency than SEVERE GEAR® 75W-140.

NOTE: AMSOIL SEVERE GEAR® Synthetic Extreme Pressure (EP) Gear Lubes are formulated with a very robust EP additive package and, as a result, usually do not need the addition of any friction modifier additive, even if recommended by the manufacturer (OEM). If limited slip differential chatter still occurs, then add AMSOIL Slip-Lock® Friction Modifier Additive.

AMSOIL Long Life Synthetic Gear Lubes (SAE 75W-90 & 80W-140)
AMSOIL Long Life Synthetic Gear Lubes are formulated with new and enhanced additives designed specifically for extended drain intervals of up to 500,000 miles in over-the-road trucks. Long Life Synthetic Gear Lubes are engineered to protect gears better than conventional gear oils, resisting acid, carbon and varnish formation and oxidative breakdown. Their superior shear stability allow them to maintain their viscosity during extended service. The enhanced 80W-140 formulation replaces the former 85W-140 formulation, allowing a greater operating range and improved cold temperature performance. AMSOIL Long Life Synthetic Gear Lubes are available in five gallon buckets, excellent for use with lube dispensing pumps.

AMSOIL SAE 80W-90 Synthetic Gear LubeWhat Gear Lube Has to Protect: About Two Gear Teeth at a Time
The 80W-90 gear lube market is mineral oil based. New reformulated AMSOIL 80W-90 Synthetic Gear Lube is designed as a high quality synthetic replacement for mineral gear oils. It is a multifunctional product designed to surpass the requirements of equipment and automotive applications calling for an SAE 80W-90 viscosity grade. Its naturally high viscosity index and shear stable construction provide improved cold temperature performance, while extreme pressure additives provide excellent protection for gears and bearings. AMSOIL 80W-90 Synthetic Gear Lube is competitively priced, making it an excellent choice for cost conscious customers.

 AMSOIL Synthetic Gear Lube Recommendation Chart
*Abbreviated version. AMSOIL has optimized gear lube performance for specific operating conditions. However, AMSOIL gear lubes are multi-functional and may be used in many different applications. This chart conveys the best AMSOIL recommendation based on product design and operating environment.

 

 

 

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Summary AMSOIL Synthetic Gear Lubes
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AMSOIL Severe Gear Synthetic SAE 75W-90 Extreme Pressure EP Gear Lube SVG
Summary

AMSOIL SEVERE GEAR® Synthetic SAE 75W-90 Extreme Pressure (EP) Gear Lube

AMSOIL Synthetic Severe Gear SAE 75W-90 EP Gear LubeAMSOIL Severe Gear® Synthetic Extreme Pressure (EP) Lubricants are premium grade lubricants specifically engineered for maximum performance in severe duty applications. These state-of-the-art AMSOIL formulations feature an exclusive blend of high viscosity, shear stable synthetic base oils and an extra treatment of high-performance additives; therefore, normally not needing any additional EP additives. AMSOIL Severe Gear© Synthetic Extreme Pressure (EP) Lubricants are formulated for the severe operating conditions of today’s pickup trucks, SUVs, heavy equipment and other hard working vehicles.
Product Code: SVG

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AMSOIL Severe Gear Synthetic SAE 75W-110 Extreme Pressure EP Gear Lube SVT
Summary

AMSOIL SEVERE GEAR® Synthetic SAE 75W-110 Extreme Pressure (EP) Gear Lube

AMSOIL Synthetic Severe Gear SAE 75W-110 EP Gear Lube AMSOIL SEVERE GEAR® 75W-110 fills the gap between the 75W-90 and 75W-140 viscosity gear lubes. This new viscosity grade, 75W-110, offers a high temperature film protection without compromising fuel economy while addressing performance and protection. Designed to provide superior protection for elevated operating temperatures without sacrificing fuel efficiency, it is formulated for use with limited slip clutches and is ideal for turbo diesel pickup trucks, vehicles used for towing and hauling and other vehicles subject to severe service operating conditions, including heavy equipment, construction vehicles, emergency vehicles, street rods and 4x4 vehicles.
Product Code: SVT

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AMSOIL Severe Gear Synthetic SAE 75W-140 Extreme Pressure EP Gear Lube SVO
Summary

AMSOIL SEVERE GEAR® Synthetic SAE 75W-140 Extreme Pressure (EP) Gear Lube

AMSOIL Synthetic Severe Gear SAE 75W-140 EP Gear LubeAMSOIL SEVERE GEAR® Synthetic SAE 75W-140 EP Gear Lube provides all the top performance of AMSOIL SEVERE GEAR® synthetic gear lubes for the heavier SAE 75W-140 viscosity recommended by many equipment manufacturers, especially those covering heavy-duty pickups and other high-stress equipment. This premium lubricant replaces competitors’ 75W-140, 80W-140 and 85W-140 gear oils. Use where maximum viscosity protection is needed for extreme severe-duty applications.
Product Code: SVO

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AMSOIL Severe Gear Synthetic SAE 190 Off Road and Drag Racing Gear Lube SRN
Summary

AMSOIL SEVERE GEAR® Synthetic SAE 190 Off-Road and Drag Racing Gear Lube

AMSOIL SEVERE GEAR Synthetic SAE 190 Off-Road and Drag Racing Gear LubeFormulated for severe racing conditions and other applications subject to extreme shock loading and pressures, AMSOIL SEVERE GEAR® Synthetic SAE 190 Gear Lubricant is a premium grade, extreme pressure gear lube engineered specifically for the demands of severe racing conditions. Its synthetic formulation provides improved flow over conventional oils, reducing viscous drag and power loss. AMSOIL proprietary extreme pressure additives form an iron-sulfide barrier coating on gear surfaces for the ultimate line of defense against wear, pitting and scoring. AMSOIL SEVERE GEAR® Synthetic SAE 190 Off-Road and Drag Racing Gear Lube protects protects gears from shock loading and tire shake, resists sling-off from G-forces and high speeds, clings to gears, promotes cooler operating temperatures, protects against rust and corrosion, and extends gear and bearing life.
Product Code: SRN

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AMSOIL Severe Gear Synthetic SAE 250 Off Road and Drag Racing Gear Lube SRT
Summary

AMSOIL SEVERE GEAR® Synthetic SAE 250 Off-Road and Drag Racing Gear Lube

AMSOIL SEVERE GEAR Synthetic SAE 250 Off-Road and Drag Racing Gear LubeFormulated for severe racing conditions and other applications subject to extreme shock loading and pressures. AMSOIL Severe Gear® Synthetic SAE 250 Gear Lubricant is a premium grade, extreme pressure gear lube  engineered specifically for the demands of the most severe racing conditions. It is formulated with shear stable, heavy synthetic base oils for “high film strength” and extra heavy treatments of additives. Its high performance synthetic formulation provides improved flow over conventional oils, reducing viscous drag and power loss. Severe Gear® SAE 250 Gear Lube provide a tough barrier cushion between metal surfaces that absorbs impact. AMSOIL proprietary extreme pressure additives form an iron-sulfide barrier coating on gear surfaces for the ultimate line of defense against wear, pitting and scoring.

  • Protects gears from shock loading and tire shake
  • Resists sling-off from G-forces and high speeds
  • Clings to gears - high pinion style and at steep angles
  • Promotes cooler operating temperatures
  • Protects against rust and corrosion
  • Extends gear and bearing life

Product Code: SRT

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Service Tips for Changing to AMSOIL Gear Lube
Summary

Helpful Differential Change Tips:

  • Flush (drain) as much of the old fluid out as possible
  • Differential fluid capacity depends on ring gear and axle housing size
  • Do not over/under fill differential. This could mean a capacity difference of a quart or more and may cause over heating problems (See the owner’s manual for proper fill level)
  • AMSOIL gear oils are formulated with friction modifiers for limited slip differential applications. There is no need to add limited slip or additional additives
  • After changing the differential fluid, drive the vehicle in 7 or 8 figure eight turns, so new lubricant can work its way into the axle assembly (Important!)

      AMSOIL Gear Lube Pump Makes Changing Gear Lube Easier

      AMSOIL Universal Hand Pump for Bottles
      Fits AMSOIL quart bottles, 1-gallon containers and 2.5-gallon containers. Guarantees efficient, quick dispensing of AMSOIL gear oils, transmission fluids and any oil that may need to be pumped. Great for fluid fills in differentials, transmissions, transaxles, boat lower units and boat sterndrives.
      Product Code: G2039

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    • AMSOIL Synthetic SAE 75W-90 Long Life Gear Lube FGR
      Summary

      AMSOIL Synthetic SAE 75W-90 Long Life Gear Lube

      AMSOIL Synthetic SAE 75W-90 Long Life Gear LubeAMSOIL Long Life Synthetic Gear Lubes are extended drain gear lubes engineered for 500,000-Mile Service Life in Over-The-Road Trucks. The superior cold temperature fluidity and high temperature stability properties of AMSOIL Long Life Synthetic Gear Lubes make them excellent for all-season use. Equipment lasts longer and maintenance costs are reduced with AMSOIL Long Life Synthetic Gear Lubes.
      Product Code: FGR

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      AMSOIL Synthetic SAE 80W-140 Long Life Gear Lube FGO
      Summary

      AMSOIL Synthetic SAE 80W-140 Long Life Gear Lube

      AMSOIL Synthetic SAE 80W-140 Long Life Gear LubeThe same benefits of the AMSOIL Synthetic SAE 75W-90 Long Life Gear Lube, except a heavier viscosity. AMSOIL Long Life Synthetic Gear Lubes are extended drain gear lubes engineered for 500,000-Mile Service Life in Over-The-Road Trucks. The superior cold temperature fluidity and high temperature stability properties of AMSOIL Long Life Synthetic Gear Lubes make them excellent for all-season use. Equipment lasts longer and maintenance costs are reduced!
      Product Code: FGO

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      AMSOIL Synthetic SAE 80W-90 Gear Lube AGL
      Summary

      AMSOIL Synthetic SAE 80W-90 Gear Lube

      AMSOIL Synthetic SAE 80W-90 EP Gear LubeProvides the long-lasting protection, fuel efficiency and dependability needed for top performance, even in extreme-pressure conditions. Stay fluid in cold temperatures for easy cold-weather shifting. Excellent for use in passenger cars and trucks requiring a GL-5 gear lube, including those with limited slip differentials. AMSOIL 80W-90 Synthetic Gear Lube is a multi-functional product designed to surpass the requirements of equipment and automotive applications calling for an SAE 80W-90 viscosity grade.
      Product Code: AGL

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      AMSOIL Synthetic Universal SAE 75W/80W-90 Marine Gear Lube AGM
      Summary

      AMSOIL Synthetic Universal SAE 75W/80W-90 Marine Gear Lube

      AMSOIL Synthetic SAE 75W/80W-90 Universal Marine Gear LubeThe high performance lubricant engineered to meet the demands of marine applications. AMSOIL Universal Synthetic SAE 75W/80W-90 Marine Gear Lube provides excellent gear and bearing protection even when contaminated with 10% water, provides reduced friction and wear, excellent rust and corrosion protection, long seal life, and superior foam prevention. It is extreme pressure (EP) additive fortified for superior protection of fast accelerating, high torque/horsepower engines, and protects against shock loading from cavitation of heavily loaded engines.
      Product Code: AGM

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      AMSOIL Slip-Lock Differential Additive ADA
      Summary

      AMSOIL Slip-Lock® EP Differential Additive

      AMSOIL Slip-Lock Extreme Pressure EP Differential AdditiveAMSOIL Slip-Lock® Differential Additive is formulated with advanced friction modifiers and is designed to eliminate gear-housing chatter in cars, trucks and SUVs equipped with limited-slip, positraction and locking differentials. It also reduces the banging and clunking associated with automatic locking differentials. For chattering differentials not running AMSOIL Gear Lube, this product is an excellent solution to the problem.
      Product Code: ADA

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      AMSOIL Synthetic Chaincase and Gear Oil TCC
      Summary

      AMSOIL Synthetic Chaincase and Gear Oil

      AMSOIL Synthetic Chaincase and Gear OilDesigned specifically for chaincases and gearcases, AMSOIL Synthetic Chaincase & Gear Oil provides superior protection and performance for enclosed chains and gears found in snowmobiles, ATVs and general equipment. Formulated with extreme-pressure additives, it helps extend chain and gear life through increased wear protection. AMSOIL Synthetic Chaincase & Gear Oil repels water, while also inhibiting rust, oxidation and foam. Its low pour point ensures superior low-temperature starting, reducing drag to deliver maximum power. 
      Product Code: TCC

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