Royal Purple High Performance Synthetic Motor Oil is a specially formulated multi viscosity oil for use in gasoline and diesel engines of all types from cars and trucks to SUVs， motorcycles and boats. Royal Purple Motor Oil with Synerlec additive technology reduces friction， which results in a 1-3 percent increase in horsepower， lowers operating temperatures， provides superior corrosion protection， improves fuel economy， reduces emissions and extends oil life. A.P.I. Certified.FeaturesBetter wear protectionIncreased fuel efficiencyBetter protection of the expensive catalytic emission systemImproved compatibility with fuels containing ethanolSuperior corrosion protectionWarrantypLimited Warranty/p