Synthetic ATF Supplement is a uniquely blended synthetic product specifically formulated for use in automatic transmissions. Synthetic ATF Supplement incorporates a high-quality synthetic base stock with SE (synthetic esters) which reduces heat, wear, and extends transmission fluid life. Synthetic ATF Supplement also incorporates friction modifiers, and boundary lubricants to optimize transmission performance while lowering operating temperatures. Blends with all domestic and worldwide OEM automatic transmission fluids.