75w90 Trans/Diff Lube Case/12

The 75w90 Trans/Diff Lube Case/12 from Lucas Oil is a professional-grade synthetic gear oil formulated for transmission and differential applications where extreme pressure protection and smooth shifting are non-negotiable. This 12-quart bulk case is engineered for fleet operators, service technicians, and serious automotive enthusiasts who demand consistent performance across heavy-duty and performance-oriented vehicles. The limited-slip additive package ensures smooth engagement in clutch-type differentials while protecting against gear wear and thermal breakdown.

Rated at 75W90 viscosity, this synthetic formulation delivers superior film strength at both cold starts and elevated operating temperatures, critical for protecting ring gears, pinions, and synchronizer assemblies. The limited-slip additive reduces chatter and provides secure engagement without sacrificing smooth torque transfer, making it ideal for differentials in trucks, performance cars, and manual transmissions. Lucas Oil's synthetic base stock resists oxidation and sludge formation far longer than conventional mineral oils, extending drain intervals and reducing maintenance costs over the life of the vehicle.

This 12-quart case is perfect for service shops, fleet maintenance operations, or multi-vehicle owners who require reliable gear protection across different makes and models. The 75W90 viscosity grade meets or exceeds OEM specifications for most domestic and import passenger vehicles, light trucks, and performance applications where conventional 75W90 or 80W90 oils are recommended. Individual 1-quart bottles within the case allow for convenient inventory management and precise fill volumes during transmission and differential service procedures.