SAE 15W40 Diesel Oil Case 4 x 1 Gal.

The SAE 15W40 Diesel Oil Case 4 x 1 Gal. from Lucas Oil is an essential lubricant for diesel engine builders, fleet operators, and serious diesel truck enthusiasts who require reliability under extreme loads and temperature fluctuations. This case contains four 1-gallon jugs, making it ideal for convenient storage and regular maintenance of heavy-duty diesel engines, including popular platforms like Cummins, Powerstroke, and Duramax.

Lucas Oil's 15W40 formulation is designed to flow readily at 15-weight viscosity during cold starts, ensuring prompt circulation and reducing wear during the critical initial moments of engine operation. As the engine reaches operating temperature, the oil thickens to a stable 40-weight film, providing essential protection for cylinder walls, bearings, and ring lands. The formulation includes detergents and anti-wear additives that help suspend soot and combustion byproducts, preventing sludge buildup and extending oil drain intervals.

This four-gallon case is perfect for workshop rotation stock or for completing two oil change cycles on full-size diesel trucks, reducing packaging waste and offering better value compared to single-quart bottles. Diesel mechanics and truck owners will appreciate the performance and reliability that Lucas Oil's SAE 15W40 Diesel Oil provides in demanding applications.