American V-twin Engine Lubricant Multi-Viscosity, 25W/60, 32 Ounce Quart Recommended for the Harley Davidson, Twin Cam, Evolution XL, Evolution 1340, Pre-Evolution (20W/50 and 25W/60) and Buell engines Certified warranty compliant: API-SH/CG-4 service Custom formulated for the v-twin air-cooled engines Reduces engine temperature and detonation High temperature film strength improving anti-wear protection"