Developed with a proprietary mineral base stock formula, TESTED and CERTIFIED by Harley-Davidson Motor Company. Formula+ is blended to provide lubricity for the anti-wear requirements of transmission gears. Formulated to maintain the coefficient of friction for proper clutch operation and provide adequate lubrication for the primary chain. This lubricant is approved for use in all stages of transmission and primary chain case life. NOT FOR USE IN THE CRANKCASE AS A MOTOR OIL.