Supreme Member
I think the III is just a more strict spec and possibly different additives. You can replace II with the Dextron III, even mix them if just adding to a low tranny.
Supreme Member
Yep, Dexron 3 is Dexron 2's replacement and is backward compatible. Oh at Dexron has to t 
Tags 700r4, dexron, dexron3, dexron6, dextron, diferences, diff, difference, differences, diffrences, ii, iid, iii, mix, mixing, rating, replacement