Quote Originally Posted by Kennedy View Post
Dex VI is also said to solidify at a warmer temp than DexIII.
???

Meaning that at colder temps the IV won't flow as well as the III?

But the Dex IV is a full synthetic (at least as it is labelled at the local NAPA). Does that not mean it has better flow properties, hot and cold, than III? Isn't that why GM says to replace III with IV in the transmission?