85w140 Gear Oil 1 Gal

The Lucas Oil 85W140 Gear Oil 1 Gallon jug is a heavy-duty conventional lubricant designed for the rigorous demands of limited-slip differentials, transfer cases, and gear-driven systems. This product is ideal for operators and mechanics who need reliable protection in high-stress drivetrain environments, including off-road vehicles and industrial equipment.

With a viscosity rating of 85W140, this gear oil provides optimal film strength across temperature extremes, ensuring dependable performance in both cold climates and under extreme load conditions. The formulation includes a limited-slip additive package that helps reduce chatter and noise in differentials with frictional clutches while maintaining consistent viscosity under pressure. This oil resists oxidation and thermal breakdown, extending drain intervals and protecting critical gears, bearings, and synchronizers from premature wear.

Vehicle owners operating manual transmissions, differentials with limited-slip clutches, and heavy-duty trucks will benefit most from this formulation. The 1-gallon container is perfect for single fill-ups, top-offs, or as inventory stock for service shops and fleet maintenance programs. Compatibility extends to most rear differentials, transfer cases, and manual gearboxes.