MC-71 Posted January 25 Share Posted January 25 Please post what kind of tranny fluid do you use? I would like a use Valvoline. But don’t which one. I have a TH 400. Quote Link to comment Share on other sites More sharing options...
DragCat Posted January 25 Share Posted January 25 When I had mine rebuilt I asked my builder what he recommended....Amsoil is what I use 1 Quote Link to comment Share on other sites More sharing options...
420ponies Posted January 25 Share Posted January 25 I'm waiting...... Come on guys and gals,my last transmission, Mercron in my TH2004R, Ford ATF in my TH350. No problems with what the builder told me to use. Quote Link to comment Share on other sites More sharing options...
MC1of80 Posted January 25 Share Posted January 25 All our th400s use the old tried and true type F. 8 of them. Ask your transmission rebuilder what they recommend. 2 Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 25 Share Posted January 25 It's one of those questions that will typically have 8 different answers, if you ask 8 separate people. GM says that the Dexron VI is backward compatible with the 'recommended' Dex III for a T-400.. Some people swear by the Valvoline Max Life fluid (Dex VI type), others swear by the Ford Type F (B&M used to recommend it with their shift kits), etc. 3 Quote Link to comment Share on other sites More sharing options...
cny first gen 71 Posted January 25 Share Posted January 25 I've heard that the f type is basically the same formula as the b&m trick shift just a different color. But it's not compatible with dextron so if your using it, the torque converter has to be completely emptied and cleaned out so be careful. 5 Quote Link to comment Share on other sites More sharing options...
Scott S. Posted January 25 Share Posted January 25 The mechanic that re built my 200r4 recommended synthetic.... Wasn't specific on any brand. Quote Link to comment Share on other sites More sharing options...
MC-71 Posted January 25 Author Share Posted January 25 (edited) I contacted Valvoline and they recommended Maxlife ATF or Dex/Merc ATF. So I ordered the Dex/Merc. Part number 773636 for a gal. Part number 798153 for a qt. This is a fluid change and not a rebuild. My Monte has not run in a good 10 years. Keeping my fingers crossed🤞 Edited January 25 by MC-71 2 Quote Link to comment Share on other sites More sharing options...
Dtret Posted January 25 Share Posted January 25 The transmission shop that did my 400 told me to use Dex6 2 Quote Link to comment Share on other sites More sharing options...
jft69z Posted January 25 Share Posted January 25 Walmart usually has pretty good prices on fluids, especially if getting it in the 4 or 5 quart jugs. 1 Quote Link to comment Share on other sites More sharing options...
Marks71 Posted January 25 Share Posted January 25 Been using Valvoline ATF since the Dexron days before Dexron 2. Now it’s Dex/Merc. Never had any issues, it’s always worked for me. Use their motor oil also. Quote Link to comment Share on other sites More sharing options...
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