MILESYN SYNTHETIC BLEND MOTOR OIL 5w20 GF-6, SN PLUS are designed to exceed the demanding lubrication requirements of today's naturally aspirated, turbo-charged and super charged gasoline engines. These oils are specially formulated to provide superior protection, resist oxidation, meet volatility requirements and protect against low speed pre-ignition for the new ILSAC GF-6 SN Plus. Milesyn Synthetic Blend Motor Oil grades 5W-20, 5W-30, and 10W-30 meet the American Petroleum Institute's (API) highest performance Gasoline Engine Service category SN Plus. These viscosity grades are classified by API as "Energy Conserving" engine lubricants, and meet ILSAC GF-6. The 10w-40 viscosity grade meets the service category API SN. All viscosity grades are recommended for the requirements of previous categories SM, SF, SG, SH, and SJ.