Motosel Synthetic Blend SAE 20W-50 Motor Oil meets or exceeds the American Petroleum Institute (API) SQ service classification and is compatible with all prior API categories. Motosel Synthetic Blend SAE 20W-50 Motor Oil has been field tested to be comparable to most American, Asian, and European manufacturers’ standards, including MB 229.1, GM 6094M, and many other OEM specifications where a synthetic blend API SQ motor oil is recommended.