ATF (Automatic Transmission Fluid) has evolved significantly over time, its formulation style reflecting the changing demands of transmission hardware. The launch of GM’s (General Motors) landmark DEXRON® – VI fluid specification, which celebrates its 20th birthday this year, heralded a new age of high-performance, low-viscosity ATF. Adam Banks, ATF Senior Marketing Manager, Afton Chemical, looks at why modern ATF is so vital to the reliability and longevity of today’s passenger car transmissions and shares insights into the potential pitfalls of continuing to use outdated specs.














