just curious about the tranny fluid
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Launching!
Joined: Jun 2013
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just curious about the tranny fluid im still deciding which DEX 6 fluid to swap to amsoil or redline they both seem like good fluids any input on these two would be appreciated i want to have the best possible fluid in the tranny if im gonna get drag radials. and also i couldnt find anything on why dex 3 is not good for our trannys, just curious on whats the difference in the two since my old gtp with the same tranny took dex 3 if we put in dex 3 in a ls4s tranny would it fail?
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Verdad Gallardo there are various grades of transmission fluids you can get that do not have friction modifiers, similar to the way you can get compressor oil (oil without additives) or SAE straight weight oils for car engines. john deer hy-gard is a very common one used in racing applications that the old timers use to tighten up converters and allow the clutches to bite harder, but id be hesitant using any of these oils in a modern trans. The synthetic modern day type-f compatible fluids are far superior then the original standard so you can get the same effect with the risk of damaging internal components. I have redline D4 and racing ATF (sythetic type-f) sitting waiting in the wind to be swapped into mine, 4 quarts of each which should in theory provide the efficiency bump im looking for.
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From: WEST PALM BEACH FL
The part number for the 5 gal is 8t-9570 and it's Dave's mixture I ran it for 6 months straight with no issues before the motor let go and I'm using now. It's really thick compared to dex 3 my Trans holds 16 quarts with my pan and spacer setup well 15 plus the quart I put in the converter
As far as dex itself needing to be required, its merely the addition of friction modifiers that interact with the clutches in the type of transmission your using that determines what type of fluid you use. Would I recommend running straight type-f? No probably not, because it doesnt have friction modifier at all. But blending usually serves people quite well in whatever application they have to use it for. Dave's blend as well as others in here are merely just shots at improving clutch grabbing power, firming up shifts, and increasing efficiency through the converter using a higher viscosity fluid mixed in. We know that Type-F IS compatible in use with the 4t65 as well as others like the 4l60 etc, but when you start goofing around with brand specific fluids, especially stuff designed for allison transmissions or large construction and demolition equipment, or fluid that wasnt even designed to go into a trans, you run the risk of finding out the hard way that it doesnt let your trans live very long.
ok ill be fair, an "educated guess". Problem is the lack of 500+whp 4t65e's in general, and the fact that they rarely last long enough to say whether or not the fluid has any long term issues.
Trans fluid might not be the saving grace for your trans, you have to analyze what exactly is failing. What keeps breaking that's causing you to lose third?