Devocamper wrote:
falconbrother wrote:
My old burb was designed for Dex III. I have of course been using Dex-6 on the occasional drain and fill. I went to the store to buy some Dex 6 the other day and all they had was a synthetic Dex-6/Merc-LV. I read the label and it reads like a fluid that replaces the above two plus some import fluids. I suppose I will run it and not worry about it. But, as a general rule, I haven't been a big fan of the multi use fluids.
probably does not matter at this point but dex 6 was not backwards compatible with dex 3 at least not in the Allison transmissions dex 6 would damage the seals for some reason there was a certain manufacturer date for the change over, look for the material standard number if it is on the bottle it should be ok .
Dex6 if fully compatible with GM transmissions using DexIII. Your correct on certain allisons, but it's an allison not GM transmission.
And I believe Dex6 has always been a synthetic fluid. but only more recently labeled as such by many aftermarket suppliers.
Personally I'd get a Dex6 fluid, not one designed for multiple uses. See if it says "compatible with" or "GM approved".
you want one with a GM approval