Thread: th350 recomended fluid

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I have a half a dozen of the 350's in the back. I had to go and out all of the dipsticks and remind myself what GM wanted to run back then. Dexron was is what they all say. I and everybody else here do not remember the last time we saw it on the shelf. I have personally felt the need to run Type "F" for it's friction modifiers so the clutch packs would be consistant upon shifting and bands would last a bit longer. Type "F" was a buggar to get for a while, Now I can find it everywhere here.

I use AMSOIL's Super Shift Racing Fluid in my TH350. It's a synthetic Type-F fluid, but is recommended for all high performance / racing transmissions.

http://www.amsoil.com/redirect.cgi?z...storefront/art

Type F has/still works for me.

That surprises me. I bet you can't simply dump F on top of Dextron. You probably have to start off with it dry?


Don


I guess that's one way to make a Chevy tranny better, put FORD parts in it. lol. (I couldn't pass that one up)

The fundamental difference between Dexron and Type F is the friction modifier additive for the clutches. GM preferred(s) a smoother shift than Ford. Some folks like a firmer feeling shift, so F is more appropriate for that. BTW the Type F spec went out the window almost 20 years ago as supported by Ford. The name Dexron is trademarked by GM and has no letter T in it. Dexron III is generally backward compatible to previous Dexron applications.

Originally Posted by Itoldyouso

That surprises me. I bet you can't simply dump F on top of Dextron. You probably have to start off with it dry?

I never mixed the two, start dry without a doubt.