10w40 Motorcycle Oil Cs/12-Qt

The 10w40 Motorcycle Oil Cs/12-Qt by PennGrade Motor Oil is a purpose-built lubricant engineered specifically for air-cooled and liquid-cooled motorcycle engines that demand robust thermal stability and wear protection. This 12-quart case is ideal for enthusiasts who perform their own maintenance and need a reliable, consistent oil supply for seasonal rides, track days, or long-distance touring. Whether you're rebuilding a classic cruiser, maintaining a high-performance sportbike, or keeping a dual-sport adventure bike running strong, this multi-grade formulation delivers the protection modern engines require without sacrificing simplicity or value.

PennGrade's 10W40 viscosity rating strikes a critical balance between cold-start pumpability and high-temperature film strength, essential for engines that transition from winter commutes to summer heat. The 10-weight winter rating ensures rapid oil circulation during cold starts—preventing bearing starvation and metal-to-metal contact when the engine first turns over—while the 40-weight hot rating maintains viscosity under sustained load and elevated operating temperatures. This formulation includes anti-wear additives and oxidation inhibitors that protect against sludge buildup, extend drain intervals, and reduce wear on rings, pistons, and valve trains, while also being wet-clutch compatible.

This oil is ideal for a variety of motorcycle types, including cruisers, sportbikes, standards, and touring bikes. Its formulation is designed to meet the specific needs of modern motorcycle engines, ensuring optimal performance and longevity. With the case packaging minimizing air exposure between service intervals, it preserves oil integrity and simplifies fleet or multi-vehicle management for serious riders.