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Synthetic Motor Oil
First to develope an API-rated 100 percent synthetic motor oil.

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AMSOIL Synthetic Gear Lubes


AMSOIL Severe Gear SAE 75W-90 Gear Oils

AMSOIL 75W-90 Severe Gear Synthetic Gear Lube
Product Code: SVG

 

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. AMSOIL Severe Gear Synthetic EP Lubricants maintain their viscosity for long-lasting protection against metal-to-metal contact. The proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring.

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AMSOIL SAE 75W-90 Synthetic Gear Lubes

AMSOIL SAE 75W-90 Gear Lube
Product Code: FGR

 

Specifically engineered for extended drain intervals up to 500,000 miles as set by equipment manufacturers for over-the-road trucks and heavy equipment. Prevents wear and improves equipment life. Excellent "All Season" summer and winter performance. Outperforms all conventional gear oils. Also excellent for passenger cars and trucks. Compatible with most limited-slip differentials.

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AMSOIL Synthetic Marine Gear Lubes

AMSOIL 75W/80W-90 Universal Synthetic Marine Gear Lube
Product Code: AGM

 

An exclusive AMSOIL formulation of synthetic base oils and high performance additives that address the specific concerns of marine applications. It is extreme pressure (EP) additive fortified for superior protection of fast accelerating, high torque/horsepower engines. It protects against shock loading from cavitation of heavily loaded engines. AMSOIL Universal Synthetic Marine Gear Lube is water resistant. It maintains extreme pressure protection even when contaminated with as much as 10% water. It promotes longer seal life, preventing excessive water leakage.

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Quart of AMSOIL Severe Gear SAE 75W-110

AMSOIL Severe Gear SAE 75W-110 Gear Lube
Product Code: SVT

 

Engineered for high-demand applications, including trailer towing, heavy hauling, 4X4 off-road driving, commercial use and racing. Protects gears and bearings from scoring and wear. Excellent cold-flow properties. Outperforms all conventional gear oils. Recommended for all types of vehicles.

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AMSOIL Severe Gear SAE 75W-140 Gear Lubes

AMSOIL 75W-140 Severe Gear Synthetic Gear Lubes
Product Code: SVO

 

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. AMSOIL Severe Gear Synthetic EP Lubricants maintain their viscosity for long-lasting protection against metal-to-metal contact. The proprietary AMSOIL additives form an iron-sulfide barrier coating on gear surfaces, providing the ultimate line of defense against wear, pitting and scoring.

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AMSOIL SAE 80W-90 Sythetic Gear Lubes

AMSOIL Synthetic SAE 80W-90 Gear Lube
Product Code: AGL

 

High quality replacement for applications specifying SAE 80W-90 conventional gear lube. Synthetic construction provides improved cold flow properties, high viscosity index and heat resistance. Contains an over treat of high quality additives, exceeding the minimum standards. Provides excellent wear protection and long equipment life. Performance specifications include: API GL-5 & MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037) for 250,000 miles, Mack GO-J, plus hypoid gear oil specifications from all foreign and domestic manufacturers such as GM, Ford and Daimler Chrysler. Can also be used in rear axles where API Service GL-4 lubricant is recommended.

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AMSOIL SAE 80W-140 Synthetic Gear Lubes

AMSOIL Long Life Synthetic Gear Lube SAE 80W-140
Product Code: FGO

 

Specifically engineered for extended drain intervals up to 500,000 miles as set by equipment manufacturers for over-the-road trucks and heavy equipment. Prevents wear and improves equipment life. Excellent "All Season" summer and winter performance. Outperforms all conventional gear oils. Also excellent for passenger cars and trucks. Compatible with most limited-slip differentials.

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Bottle of AMSOIL Synthetic SAE 190 Severe Gear

AMSOIL Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 190
Product Code: SRN

 

Recommended for racing applications that require heavier-viscosity gear lubricants. Engineered specifically for the demands of severe racing conditions. Provides improved flow over conventional oils, reducing viscous drag and power loss. The ultimate line of defense against wear, pitting and scoring. Extends gear life.

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Bottle of AMSOIL Synthetic SAE 190 Severe Gear

AMSOIL Severe Gear® Synthetic Off-Road and Drag Racing Gear Lubricant SAE 250
Product Code: SRT

 

Recommended for racing applications that require heavier-viscosity gear lubricants. Engineered specifically for the demands of severe racing conditions. Provides improved flow over conventional oils, reducing viscous drag and power loss. The ultimate line of defense against wear, pitting and scoring. Extends gear life.

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Tube of AMSOIL Slip Lock Differential Additives

AMSOIL Slip Lock Differential Additive
Product Code: ADA

 

Formulated for use with both synthetic and petroleum gear lubricants and safely replaces manufacturer recommended friction modifiers. Its convenient flip-top dispenser provides quick and easy application to the gear housing. One four-ounce bottle of Slip-Lock treats differential capacities of two to four quarts. It is not for use in automatic transmissions or other applications requiring ATF.

NOTE: AMSOIL Synthetic Gear Lubes do not require the use of this additive. However, not all differentials respond the same and if chatter is noticed, the addition of AMSOIL Slip-Lock will eliminate it. For chattering differentials not running AMSOIL Gear Lube, this product is an excellent solution to the problem.

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Helpful Differential Recommendations:

  • Flush (drain) as much of the old fluid out.

  • 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

AMSOIL Severe Gear Lubes are formulated with superior "film strength" and extra additives to protect gears and and bearings from scoring and wear, and they effectively resist high heat and possess excellent cold flow properties.  Severe Gear Lubes outperform all conventional gear oils and are recommended for all types of vehicles such as turbo diesel pick-ups, SUVs, autos, trucks, heavy equipment and motor homes.  Compatible with most limited-slip differentials.

AMSOIL Synthetic 80W-90 Gear Lube
AMSOIL Synthetic 80W-90 Gear Lube is a high quality replacement for applications specifying SAE 80W-90 conventional gear lube.  Its synthetic construction and high quality additives provide improved cold flow properties, high viscosity index, heat resistance, excellent wear protection and long equipment life.

AMSOIL SAE 80W-90 Synthetic Lower Unit Gear Lube protects outboard and sterndrive lower units in freshwater and saltwater applications.  It is an extreme pressure lubricant engineered specifically to meet the high temperature/high load demands of today's geared equipment.  AMSOIL SAE 80W-90 Synthetic Gear Lube (GL-4) doesn't break down in extreme heat and form damaging deposits, varnish and sludge.  It maintains its protective capability even in high temperatures, preventing the ridging, rippling and spalling caused by surface distress.

AMSOIL Synthetic Gear Lubes deliver maximum power and fully protect hard-working drivetrains.  Synthetics, of course, deliver maximum power because of their molecular structure best reduces friction, a big power-eater.  And they protect best, even in temperatures that gel or fry conventional lubes.  That's critical given the incredible drivetrain heat generated by heavy-load operations and the temperature extremes in which diesels often work.

In fact, AMSOIL gear lubes provide easy, dependable cold-temperature shiftability in a fraction of the time required by conventional fluids.  They actually knock high lube temperatures down to optimal - and outlast ordinary gear lubes.

AMSOIL synthetic gear lubes keep dfferentials and EP gear-lube equipped transmissions running clean, protected and at top-efficiency.

Load-bearing and extreme pressure protection - AMSOIL synthetic gear lubes are formulated to protect gears operating in heavily loaded conditions whether or not the gears operate with full film lubrication.  Superior film strength and viscosity retention offer superior protection in full film regimes, while top-quality extreme pressure agents protect when a full lubricating film does not separate gear surfaces.

The thermal durability of AMSOIL synthetic gear lubes ensures extreme pressure protection after extended exposure to extreme temperatures.  The extreme pressure agents in conventional gear lubes sometimes lose their effectiveness after extended exposure to high temperatures, leaving gears vulnerable to metal-to-metal contact and wear.

Friction-reduction - AMSOIL synthetic gear lubes reduce friction effectively, which reduces power losses, which reduces excessive gear temperatures by up to 50°F and increases fuel economy.  In fact, an independent research institute found that trucks with AMSOIL Series 2000 Synthetic 75W-90 Gear Lube in differentials obtained up to 4.83 percent more miles per gallon than matched trucks with a conventional gear lube in the differentials.

High and low temperature performance - AMSOIL synthetic gear lubes maintain their viscosity better with changes in temperature than conventional lubles do, which allows them to protect over a broader temperature range.  They maintain better low temperature fluidity than conventional gear lubes do, while also protecting better in higher temperatures.

Reduce wear - The outstanding extreme pressure and anti-wear properties of AMSOIL Synthetic Gear Lubes keep wear at an absolute minimum.  The results: greater equipment realiability and less money spent of repairs, replacement parts, and costly downtime.  AMSOIL helps keep equipment in the field or on the road and out of the shop!

Extended drains - In commercial vehicles operated in normal conditions, AMSOIL synthetic gear lubes may be used up to five times longer than conventional petroleum gear lubes may be used.

More - AMSOIL synthetic gear lubes provide limitied slip capability, and may be used in limited slip differentials without special additives.  AMSOIL synthetic gear lubes also provide outstanding protection against rust, which is important for stored equipment.