Edward's Transmissions+ Auto Systems Expert - Keystone Ave

Tech Tip Tuesday: Transmission Fluid Specifications

Not all transmission fluid is the same. Using the wrong specification is one of the most common contributors to premature transmission wear, and the damage usually does not show up until thousands of miles later.

Modern automatic transmissions are engineered around specific fluid chemistry. Dexron VI, Mercon LV, Toyota WS, Chrysler ATF+4, and Ford MERCON ULV all have different viscosity profiles, friction coefficients, and additive packages. A fluid that performs correctly in one transmission can cause harsh shifting, slippage, or internal wear in another.

The reason this matters beyond the label is that transmission control modules are calibrated to a specific fluid's friction behavior. When fluid chemistry is wrong, the TCM's shift timing no longer matches how the clutch packs actually engage.

A service is only as good as the fluid going into the transmission. At Edwards Transmissions+, we confirm the OEM specification for your specific vehicle before any service begins.

Edwards Transmissions+ | Indianapolis Area