I used MOBIL 1 ATF fluid and so far so good.What fluid did you end up using? I'm trying to figure out what to buy for this weekend. On Tremec's website:
"A: For all TKO 5-speed models, TREMEC recommends GM Synchromesh™ (GM Part # 88861800) – or equivalent, or Mobil 1 Synthetic ATF. For all other aftermarket models we recommend Dexron III ATF"
So I assume this means a Dexron III ATF which is more of a guideline than a brand. From what I understand GM let their trademark run out in 2006. Dexron IV came out and people were saying to use that instead of Dexron III. Then they realized that was the wrong thing to do, and GM came out with GM Part# 88861800 to use instead. However if that is what we are supposed to use, then why does Tremec say "For all other aftermarket models we recommend Dexron III ATF"?