Newest API rating of SL for catalytic converters. Meets the following standards: API SL/SH/SG and JASO MA. Recommended for all 4-stroke engines. Ester technology to improve engine response. Proprietary extreme pressure formula to protect the gearbox. Low sulfur and phosphorus formula for bikes fitted with catalytic converters. 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.