Valvoline DEXRON-VI Full-Synthetic Automatic Transmission Fluid is formulated with premium synthetic base stocks and advanced additive technology to ensure your transmission runs smoothly. It meets and exceeds the requirements of the General Motors' Dexron VI specification, giving you peace of mind that it is a reliable option. Valvoline Dexron VI Autozone can be used in new or old GM transmissions. This blend can be used with Dexron II and Dexron III as well. Valvoline ATF Dexron VI will help keep any GM vehicle running in top condition to ensure that it is useful for a long time.