A quarter of a century ago, General Motors broke out with its new six-speed automatic transmission. It was a major technological step up that required a new fluid. Dexron-III (H) couldn’t meet the new hardware demands. So GM decided to develop a new spec, enlisting help from chemical additives suppliers and test laboratories.
Those involved could not have foreseen the journey to develop the new Dexron-VI specification, which raised the bar for ATF, as we now head into the era of eight and 10-speed automatic gears boxes. Brent Calcut and Mike Glasgow were part of the Afton team who developed the spec. They share their recollections with Tim Sullivan, our executive editor.
Read the full-length article in the October edition of Lubes’n’Greases magazine to see more detail about the development of this epoch-defining specification.
