Advanced synthetic multi-functional formula for both domestic and foreign motorcycles, designed to provide the absolute best lubrication. Reduces friction, heat and wear and is specially formulated to excel in all areas unique to motorcycles, including high engine RPM, wet clutch lubrication, extreme pressure regions of gears and rust common to short drives and storage. 10W-40 is recommended for high-performance liquid or air-cooled 4-stroke engines and is wet-clutch compatible for use in transmissions. 20W-50 is excellent in air-cooled engines due to high heat resistance and can also be used in transmissions and the primary chaincase. These products are not recommended where API GL-4 or GL-5 gear oil is required. 1 quart.