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AMSOIL Long Life Synthetic
Gear Lube SAE 75W-90 (FGR)

AMSOIL Long Life 75W-90 Gear Lube

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

See Pricing Information or Place an Order

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
5-Gallon Pail
16-Gallon Keg
30-Gallon Drum
55-Gallon Drum


 

PRODUCT DESCRIPTION
AMSOIL Long Life Synthetic Gear Lubes are extended drain gear lubes engineered specifically to last several times longer and protect gears better than all conventional gear oils. These exclusive AMSOIL formulations of premium synthetic base oils and high performance additives resist acid, carbon and varnish formation from oxidative breakdown. Components run cleaner and last longer. AMSOIL Long Life Synthetic Gear Lubes are shear stable and friction reducing. They maintain their viscosity during extended service for maximum wear control and they are fuel-efficient. 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.

Applications
AMSOIL Long Life Synthetic Gear Lubes, in the correct viscosity grades, are recommended for all domestic and foreign applications such as over-the-road trucks, light, medium and heavyduty trucks, off-road equipment, commercial vehicles, motorhomes, autos, SUVs, emergency vehicles, busses, delivery/utility vehicles and tractors.

Use AMSOIL Extended Drain Synthetic Gear oils in differentials, manual transmissions or other gear applications where one or more of the following standards are specified: API GL-5 & MT-1, MIL-PRF-2105E, Dana SHAES 234 (Formerly Eaton PS-037) for 250,000 miles, Dana SHAES 256 (Formerly Eaton PS-163) for 500,000 miles, Mack GO-J & GO-J+, Meritor 0-76N, and Navistar TMS 6816 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.

AMSOIL Long Life Synthetic Gear Lubes provide:

  • High Load Gear and Bearing Protection
  • Reduced Operating Temperatures
  • Rust and Corrosion Protection
  • Better Cold Weather Shifting
  • Improved Efficiency
  • Improved Seal Life

For product service life in differentials, consult your owner's manual or the Original Equipment Manufacturer (OEM) to establish the application, NORMAL or SEVERE.

 

TYPICAL TECHNICAL PROPERTIES
AMSOIL Long Life Synthetic Gear Lube 75W-90 (FGR)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
15.9
Kinematic Viscosity @ 40°C, cst (ASTM D-445)
122.6
Viscosity Index (ASTM D-2270)
138
Brookfield Viscosity, cP (150,000 Max)
92,325 @ -40°C
Flash Point, °C (°F) (ASTM D-92) 150°C Min.
212 (414)
Pour Point, °C (°F) (ASTM D-97)
-51(-67)
Copper Corrosion (ASTM D-130) 1b Max @ 121 °C (250°F) / 3hr
1b
Falex Procedure B (ASTM D-3233) (failure load, lbf.)
1500
Foam Stability (ASTM D-892) (20/50/20 maximum)
0/0/0


 
NORMAL
SEVERE
Cars, SUV, Light & Medium Duty Trucks Drain at 100,000 miles of service or according to the owner's manual, whichever is longer Drain at 50,000 miles of service or according to the owner's manual, whichever is longer
Heavy Duty Class 8 Truck, Commercial Equipment Follow the OEM drain interval (miles or hours) for synthetic oil up to 500,000 miles. Otherwise, drain at twice the OEM interval for conventional oil. Follow the OEM drain interval (miles or hours) for synthetic oil. Otherwise, drain at twice the OEM interval for conventional oil.


For product service life in non-differential applications, consult owner's manual or the OEM for either normal or severe synthetic oil service intervals. Where service intervals are unavailable, drain at twice the interval for conventional oil.

AMSOIL LONG LIFE SYNTHETIC GEAR LUBES are compatible with conventional gear oils, however mixing oils reduces the benefits and nullifies the extended service life recommendations.

AMSOIL LONG LIFE SYNTHETIC GEAR LUBES are compatible with most limited slip differentials. If limited slip differential chatter occurs, add AMSOIL Slip-Lock™ friction modifier additive.

AMSOIL LONG LIFE SYNTHETIC GEAR LUBE 75W-90 replaces competitors' 75W-90 and 80W-90 viscosity grades.

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  • Fewer Oil Changes 
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  • Reduced Maintenance Costs 
  • Extended Equipment Life 

COMPARISON TESTING

AMSOIL Gear Lube vs. 13 Other Gear Lubes
In depth study of gear lubes. See how 13 other popular 75W-90 gear lubes compare with AMSOIL.

AMSOIL vs. Mobil1 and 9 Others
See how AMSOIL stacks up against 10 other motor oils...

AMSOIL Motorcycle Oil Comparison Tests
Read our new White Paper: "A Study of Motorcycle Oils" The most comprehensive motorcycle oil testing in history. 26 oils compared. 28 pages of documentation. (PDF 2.5MB)

See How AMSOIL Greases Compare
AMSOIL Greases were recently tested against the most popular greases. See how they compare to the competition.

INTERESTING FACTS


About AMSOIL Inc.
A Commitment to Excellence in Synthetic Lubrication. 

Frequently Asked Questions
Frequently asked questions about synthetic lubricants

AMSOIL Innovations
Chronological list of AMSOIL product introductions covering 30+ years.

ExxonMobil Follows AMSOIL into Extended Drain Market

What is a Motor Oil?
Learn about motor oil and oil and air filtration.

AMSOIL and the Environment
Learn about the positive impact using AMSOIL lubricants can have on our environment.

What Does PAO Synthetic Mean

PAGES OF INTEREST

Why Motor Oil Deteriorates

How Automatic Transmissions Work
How hydraulics, mechanics, and electronics team up in a modern automatic transmission.

An Education in Grease
Everything you ever wanted to know about grease.....

What Happens When You Switch To a Synthetic Motor Oil

What is Meant by Typical Technical Properties
Found on AMSOIL product data sheets

AMSOIL DIVISIONS

Altrum products

Altrum Division of AMSOIL Inc.
Established in 1985, the ALTRUM Division of AMSOIL INC. offers high quality nutritional supplements designed to maximize health and nutrition. ALTRUM provides the same excellence in health products that AMSOIL first established for lubricants in 1972.

The ALTRUM Division was founded on Al Amatuzio's unwavering belief that good nutrition and a healthy lifestyle are vital to success.

Amatuzio's drive for enhanced nutritional products and insistence on all natural, high-quality ingredients remain the driving force behind the ALTRUM Division. The same principles of high product quality and performance that apply to AMSOIL products also apply to the ALTRUM line.


Aggrand Organic Fertilizers

AGGRAND Natural Fertilizers is committed to building balance nutrient rich soils that in turn produce better crops. We create liquid fertilizers from the highest quality natural materials available. Products that support and enhance the sustainable agriculture efforts of the farmer, nursery, lawns care specialist, golf course superintendent, wildlife food plot manager, and home gardener.


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