World class lubricants. It's all about quality. Warren Synthetic Blend SAE 20W-50 Motor Oil is formulated to provide engine protection under severe operating conditions. A blend of synthetic and high viscosity index mineral oils combined with a carefully selected additive package, provide outstanding protection against wear, rust, corrosion, oxidative thickening, acid formation, sludge and varnish deposits. Exceeds requirements for gasoline engines requiring an SN, SM or SL motor oil. API services SN. API service SN, SM, SL. Motor oil is recyclable. Don't pollute. Conserve resources. Return used oil to collection centers. www.warrenoil.com. Made in USA from domestic and imported components.