Schaeffer Manufacturing Co. products

Extreme Performance Full Synthetic is designed for use in Harley-Davidson V-Twin transmissions and high performance differentials. Extreme Performance Full Synthetic is engineered from the highest quality of polyalphaolefin (PAO) synthetic base oils, a non-corrosive, extreme pressure additive and proven friction modifier, Micron Moly®. This unique blend helps increase transmission and gear efficiency, providing smoother transmission shifting and less gear noise.