AMSOIL Slip Lock® Differential Additive
AMSOIL Gear Lubricants
Concentrated friction-modifier supplement formulated to eliminate gear-housing chatter in cars, trucks, and SUVs.
AMSOIL products
AMSOIL Gear Lubricants
Synthetic gear oil, severe-gear lubricants, differential fluids, and industrial gear oils.
AMSOIL gear lubricants
Buy AMSOIL gear lubricants for differentials, manual transaxles, and transfer cases. Severe Gear 75W-90 and 75W-140 carry GL-5 ratings, with 80W-90, 75W-90 LS, and Synthetic Marine Gear Lube available for limited-slip and marine gearcases.
Order online, or save up to 25 percent on every order by joining the AMSOIL Preferred Customer program for $20 USD per year. For local pickup, the order online covers the AMSOIL Dealer locator and how to find AMSOIL near you.
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Shop by Product Type
Start with a product family, then use the AMSOIL online lookup guide to choose the formula and viscosity that fits your application.
Slip Lock
Viscosity-Based Formulas
AMSOIL 100% Synthetic ATV/UTV Transmission & Differential Fluid
AMSOIL Gear Lubricants
AMSOIL Synthetic ATV/UTV Transmission and Differential Fluid is a 100 percent synthetic API GL-5 gear lubricant engineered.
AMSOIL 100% Synthetic Chaincase & Gear Oil
AMSOIL Gear Lubricants
Extreme-pressure 100 percent synthetic lubricant engineered for the enclosed chains and gears that drive snowmobiles, ATVs, and similar powersports equipment.
AMSOIL 75W-90 100% Synthetic Marine Gear Lube
AMSOIL Gear Lubricants
Marine-specific lower-unit gear oil for outboards, sterndrives, I/O drives, V-drives, bow thrusters, and marine transmissions.
AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
AMSOIL 75W-90 Long-Life 100% Synthetic Gear Lube (FGR) is the heavy-duty, extended-drain gear oil engineered.
AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube
AMSOIL Gear Lubricants
AMSOIL 75W-90 Synthetic Manual Transmission and Transaxle Gear Lube is a 100 percent synthetic API GL-4 gear oil engineered for manual gearboxes.
AMSOIL 80W-140 Long Life 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
AMSOIL 80W-140 Long-Life 100% Synthetic Gear Lube (FGO) is the heavy-viscosity, extended-drain fleet gear oil engineered.
Engine Assembly
AMSOIL Engine Assembly Lube
AMSOIL Gear Lubricants
High-viscosity, tackified assembly lube formulated to cling to bearings, lobes, lifters, rocker arms and other internal parts during the build.
SEVERE GEAR®
AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
Severe Gear 75W-110 (SVT) is the mid-heavy viscosity in the AMSOIL Severe Gear 100 percent synthetic extreme-pressure family, engineered for the front.
AMSOIL SEVERE GEAR® 75W-140 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
Premium-grade, heavy-viscosity extreme-pressure synthetic gear oil engineered for the rear differentials and gearsets that take the hardest hits.
AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
AMSOIL SEVERE GEAR 75W-85 100% Synthetic Gear Lube, an AMSOIL synthetic gear oil stocked through the AMSOIL catalog for compatible applications.
AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
Severe Gear 75W-90 is a 100% synthetic extreme-pressure gear lube engineered for the differentials, axles, and gear sets in pickups, SUVs, vans.
AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
Premium-grade GL-5 synthetic gear oil for rear differentials, manual transmissions, and other axle and gear applications that call for an 80W-90 viscosity.
SEVERE GEAR® SAE
AMSOIL SEVERE GEAR® SAE 250 100% Synthetic Gear Lube
AMSOIL Gear Lubricants
AMSOIL SEVERE GEAR SAE 250 (SRT) is an ultra-heavy, extreme-pressure, 100 percent synthetic API GL-5 racing gear lubricant.
Core Formulas
Synthetic EP Gear Oil 150
AMSOIL Gear Lubricants
AMSOIL Synthetic EP Gear Oil ISO 150, an industrial extreme-pressure gear oil for enclosed gear drives, gearboxes, and bearing service.
Synthetic EP Gear Oil 220
AMSOIL Gear Lubricants
AMSOIL Synthetic EP Gear Oil ISO 220, an industrial extreme-pressure gear oil for enclosed gear drives, gearboxes, and bearing service.
Synthetic EP Gear Oil 320
AMSOIL Gear Lubricants
AMSOIL Synthetic EP Gear Oil ISO 320, an industrial extreme-pressure gear oil for enclosed gear drives, gearboxes, and bearing service.
Synthetic EP Gear Oil 460
AMSOIL Gear Lubricants
AMSOIL Synthetic EP Gear Oil ISO 460, an industrial extreme-pressure gear oil for enclosed gear drives, gearboxes, and bearing service.