A common concern with other available synthetic oils is that roller bearings may “skate” or “float” in the bearing race, and not actually rotate as designed. How does SYN3 prevent this from happening?
SYN3 was formulated to provide improved high temperature stability, shear stability, proper lubricity for anti-wear (without roller bearing “skate” or “float”) and maintain the coefficient of friction for proper clutch operation (without clutch slippage). Harley-Davidson does not recommend any lubricants that have not been tested and approved by Harley-Davidson engineering because we do not control the formulations. Lubricants are reformulated frequently to meet changing American Petroleum Institute (API) Ratings. API Ratings are developed and tested for use in water-cooled automotive engines and diesel applications. There is no API Rating (classification) for Motorcycle Engines. Harley-Davidson, in close partnership with our suppliers, analyzed available petrochemical technology and developed a custom-blended candidate fluid that could be used in all three cavities of a Harley-Davidson/Buell motorcycle.
