Dexron® VI
General Motors has introduced a new ATF specification it has termed Dexron® VI. GM decided it needed to upgrade its ATF specification to accommodate the Hydra-Matic 6L80,
its first 6-speed automatic. This fluid is the new service fill and factory fill specification for all Hydra-Matic GM transmissions. It will be used as a factory fill for all 2006 MY Hydra-Matic automatic transmissions starting on April 4, 2005, and it will be mandatory service fill by January 2007. Dexron® III(H) or Dexron® VI can be used for service fill until January 2007. Dexron® III(H) approvals will be valid until December 31, 2006. Dexron® VI is backward compatible with previous Dexron® formulations. Dexron® VI will be offered through GM Vehicle Care products in dealerships and service centers in Summer 2005.
GM believes this new ATF is two to three times better than the best Dexron® III(H) fluid on the market, today. Some of the enhancements of the Dexron® VI include significantly improved shift performance and fluid durability as well as superior pitting protection, oxidation stability, foaming protection, and shear stability.
We DO NOT recommend using BG Universal Synthetic ATF, Part No. 312, in place of the new Dexron® VI ATF. We also DO NOT recommend using BG ATC+, Part No. 310, with the Dexron® VI at this time. With this specification from GM being brand new, BG 312 has not been tested against this new specification nor do we have any of the new Dexron® VI ATF
for fluid analysis at this time.
Dexron® is a registered trademark of General Motors Corp.
Formula Change for ATC Plus
BG ATC Plus, Part No. 310, has been upgraded and improved. In recent past, we issued Tech Tip 05-222 informing you that we did not recommend using Part No. 310 with General Motors latest ATF upgrade, Dexron® VI. However, after extensive research, we have upgraded BG ATC Plus to be completely compatible with Dexron® VI as well as Ford Mercon® SP and Toyota WS ATFs. This upgrade includes additive chemistry that provides greater frictional durability over the drain interval and chemistry compatibility with the new friction plate materials being used in the latest automatic transmissions. BG ATC Plus remains beneficial and compatible with all other ATFs as well. Be watching for new charts that display the characteristics of this formula improvement. The first fill date for the new formula is 12/15/06. The Dexron® VI compatibility will be reflected on the label as a running change. This change will most likely appear in February.
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