need the best ATF, just rebuilt the trans!

Joined
Nov 7, 2005
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41
Location
MI
I just spent $1800 rebuilding my 4l60e (GM) trans, and after spending this much i want to make sure i put the best possible oil in it. I looked at a case of royal purple for 135 shipped and that seems to be in my affordable price range. unfortunately i heard some less than spectacular things about the RP max atf fluid. is this true? and is there something better that i could use instead? thanks in advance
 
Joined
Jan 24, 2008
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3,358
Location
Maryland
I wouls say Amsoil ATF, it makes my Turbo 350 transmission with 367,000 miles shift like it is brand new. PM me if you want, I have some other tips.
 
Joined
Oct 20, 2005
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11,857
Location
PA
Never heard a bad thing about Amsoil's products. Their transmission and gear lubes seem to be their best. They'd be a great choice. The only other brand I'd recommend off the bat is RLI BioSyn.
 
Joined
Jan 24, 2008
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Location
Maryland
 Originally Posted By: hate2work
Amsoil, Redline and Schaeffers all make excellent synthetic ATF fluids. Amsoil is probably the easiest to get, just PM Pablo and he'll set you right up :)
If Amsoil ATF was not around then Redline and Schaeffer's would be an excellent choice
 
Joined
Jan 6, 2009
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1,625
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Watertown, New York
You could also switch it to Dexron VI Valvoline states on the bottle that theirs is a full synthetic. The GM stuff from the dealer is a synthetic blend made by Petro Canada, and also seems to be good stuff. The GM literature stated that the DEX VI provides much better clutch protection and film strength than the older DEX III. I'm sure the Amsoil would be an excellent choice, if you can afford it. Their proctucts are top notch!
 
Joined
Mar 21, 2004
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Upstate NY
Install a inline filter. Magnefine would be fine, a spin-on would be better (and more expensive) if you have room.
 
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