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Diesel Gear Lube

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Best Gear Lube

A recent independent Study of Gear Lubricants found AMSOIL gear lube to be the best available. Below you will find our selection of synthetic gear lubes. The AMSOIL long life gear lube will provide years of fuel economy & wear protection for your truck. We invite you to read below to find detailed information on all of our AMSOIL gear lube products.
75W-90 Long Life Gear Lube 

Long Life Synthetic Gear Lube SAE 75W-90 (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. 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. 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.

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 80W-90 Gear Lube

Synthetic Gear Lube SAE 80W-90 (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. AMSOIL Synthetic 80W-90 Gear Lube prevents wear, resists heat, and protects gears.

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 250,000 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.

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 75W-90 Severe Gear Lube SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-90 (SVG)
Formulated for the severe operating conditions of today’s pick-up trucks, SUVs, heavy equipment and other hard working vehicles. AMSOIL SEVERE GEAR® provides performance beyond that possible with conventional gear oil. These AMSOIL custom products offer superior gear and bearing protection, better friction and heat reduction, increased efficiency and extended service life.
  • Superior Film Strength
  • Controls Thermal Runaway
  • Rust and Corrosion protection
  • Reduced Operating Temperatures
  • Improved Efficiency
  • Longer Oil, Seal, & Equipment Life
 75W-110 Severe Gear Lube

SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-110 (SVT)
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.)

.
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 Line Haul Follow the OEM drain interval (miles or hours) for synthetic oil up to 250,000 miles or 3 years, whichever comes first. Otherwise, drain at twice the OEM interval for conventional oil.
Heavy Duty Off-Road Vocational Follow the OEM drain interval (miles or hours) for synthetic oil up to 120,000 miles or 1 year, whichever comes first. Otherwise, drain at twice the OEM interval for conventional oil.
 75w-140 Severe Gear Lube

 SEVERE GEAR® Synthetic Extreme Pressure (EP) Lubricant 75W-140 (SVO)
(See above)

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75W-90    |    75W110    |    75W-140
 Slip Lock Differential Additive

Slip-Lock™ Differential Additive (ADA)
Formulated with advanced friction modifier. Designed to eliminate gear-housing chatter in cars, trucks and SUVs equipped with limited-slip, posi-traction and locking differentials. Formulated for use with both synthetic and petroleum gear lubricants and safely replaces manufacturer-recommended friction modifiers.

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