85w140 Gear Oil Case/12

Lucas Oil 85W140 Gear Oil Case of 12 is designed to provide extreme pressure protection and thermal stability for heavy-duty drivetrain systems. This product is ideal for mechanics and automotive enthusiasts who work with high-performance differentials, transfer cases, and manual transmissions. Having a full case on hand ensures that you are well-prepared for critical gear work.

The 85W140 viscosity rating indicates a winterization grade (85W) combined with a full 140-weight operating viscosity. This formulation is engineered to flow smoothly during cold starts while maintaining a protective film under high-temperature and high-shear conditions. Additionally, the conventional blend includes rust and oxidation inhibitors that help resist breakdown from moisture and metal friction.

This case format is particularly beneficial for shops that maintain multiple vehicles, fleet operators who need to stock seasonal supplies, or serious DIY mechanics performing regular differential services. The heavy 140 weight provides superior load-carrying capacity in hypoid gears and limited-slip differentials, which is essential for vehicles with aggressive gear ratios or custom driveline modifications.