Short answer: Dexron VI is General Motors' licensed automatic transmission fluid (ATF) specification, a full-synthetic, high-performance fluid introduced for GM 6-speed and later automatics. It offers improved oxidation and shear stability, friction durability, and consistent shift performance over older Dexron fluids, and is backward compatible with Dexron III in many GM applications. Many quality multi-vehicle ATFs are formulated to meet Dexron VI.
What Dexron VI is used for
Modern GM automatic transmissions (6-speed and later) specify Dexron VI. Because it's backward compatible, it can typically replace Dexron III/II in older GM units — improving stability and service life.
Dexron VI vs Dexron III
Dexron VI tightens viscosity control and raises oxidation, shear, and friction-durability requirements versus Dexron III, supporting longer drain intervals and consistent shifting.
Multi-vehicle ATF
A multi-vehicle ATF formulated to meet Dexron VI (and other OEM specs) simplifies inventory for shops and fleets — but always confirm your transmission's required specification before use.
Ultra1Plus transmission fluids
- ATF Dexron-VI: Shop ATF Dexron VI
- All transmission fluids: Shop transmission fluids
Confirm the ATF spec your vehicle requires on the product page, or contact our team. Bulk available.
Frequently asked questions
What is Dexron VI transmission fluid?
Dexron VI is GM's licensed full-synthetic ATF specification for 6-speed and later automatics, offering improved oxidation/shear stability, friction durability, and consistent shifting, and backward compatible with Dexron III in many GM applications.
Can Dexron VI replace Dexron III?
In many GM applications, yes — Dexron VI is backward compatible. Confirm your transmission's requirement first.
Is Dexron VI synthetic?
Dexron VI is a high-performance, typically full-synthetic ATF.
What is a multi-vehicle ATF?
A fluid formulated to meet several OEM ATF specifications (including Dexron VI). Verify your transmission's required spec before use.