15W40 Diesel Oil 1 Quart

The 15W40 Diesel Oil 1 Quart from REDLINE OIL is a premium synthetic diesel engine lubricant designed for serious operators who demand maximum engine protection and performance in heavy-duty applications. This oil is suitable for use in pickup trucks, work vehicles, and stationary diesel power plants, ensuring that modern diesel engines run clean and efficient under demanding loads.

With a viscosity rating of 15W40, this oil flows like a 15-weight oil at cold startup, providing faster engine cranking and better piston ring sealing in winter conditions. It maintains the protective film strength of a 40-weight oil at operating temperature, and its advanced additive package includes zinc and phosphorus anti-wear agents that reduce valve train wear and ring scuffing. The synthetic base stock resists oxidation better than conventional mineral oils, extending drain intervals and reducing acid buildup.

This formulation is particularly beneficial for mechanics and fleet managers who prioritize engine longevity and performance. Its enhanced detergency helps suspend fuel soot particles, preventing sludge deposits in the engine. The oil is compatible with both turbocharged and naturally aspirated diesel engines, meeting API CK-4 and ACEA E7 specifications for optimal performance.