| Re: What Oil for a T5 Gearbox Slightly off point but is there a difference between ATF Dexron II and ATF Dexron III. In my hurry to fill the box before the body went on I got some ATF Dexron II and filled it - it was only later that I realised that the tag on the box said III and not II. Does this matter in the T56 or are Tremec trying to do the oil companies a favour - i'm guessing III is more expensive than II as is generally the way with these things!!! |