Double ester technologys two types of esters provide excellent lubricity, better engine response and maximum engine RPM. For use in all high performance 4-stroke engines. For road racing, motocross and bikes with or without a catalytic converter. Above existing standards. Passes JASO T904 wet clutch compatibility test. 0% shear loss on Bosch ASTM D6278 test. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.