transmission fluid... what type?
Been forever since I had to add any fluid. What kind should I add to a 700r4? Just plain old automatic transmission fluid ATF or does anyone recommend one brand and/or type over the other?
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Re: transmission fluid... what type?
Most rebuilders say type F, factory says dextron.
I always use type F on rebuilt/modified trannies. |
Re: transmission fluid... what type?
The F type will act like the racing fuild. Dextron fuild is made to slip more than the F type. So the F type will work better.......use a name brand not an off brand
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Re: transmission fluid... what type?
DO NOT add type f to a trans that has been running dextron since new.you will end the life of that transmission. type f expands the seals and will deteriorate the clutches.run dextron like what is reccomended by gm.
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Re: transmission fluid... what type?
Yep, that's why I said rebuilt/modified. With a factory built tranny, run what the factory put in it. Once you rebuild it, then change to type F.
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Re: transmission fluid... what type?
I will say DO NOT run type F in a GM transmission. Yes the type F is a higher friction fluid and it will make the clutches hold better. BUT - the bushings and thrust washers are not designed for a more aggresive fluild. You will have more wear and a shorter trans life on the internals. I would rather have a little softer shift and have the trans live longer, but it is your call.
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Re: transmission fluid... what type?
Quote:
I'm not trying to get into a pissing match but your statement disputes everything I have evr heard from tranny guys. |
Re: transmission fluid... what type?
im not intending to start a pissing match first off but every tranny guy i know wouldnt use type f in anything and in fact will run dextron in old ford trannies after they are rebuilt.I'm speaking of guys who build a lot of full out race units handling 1000+hp as well as dead stock units.i have always been told that type f wrecks the bushings and seals in just about anything
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Re: transmission fluid... what type?
Thanks for the responses I have had the tranny rebuilt so I reckon I better call them and see what they use and go with that it sounds like. Thanks again.
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Re: transmission fluid... what type?
No pissing match intended, just speaking from my experience. I used to rebuild trannys at transmision shop in Mesa Arizona for a living, now that was a while back, A&B transmission, Larry ? was the owner, those guys still around ?? Anyway, I rebuild my own turbo 350 there, and yes I put type F in it, worked great until I took a 1000 mile trip with it, and wiped out the bushing between the front drum and the pump. Now I had even installed a wider heavy duty bushing in there during the rebuild. Turbo 350's like to wear out there anyway, but with a fresh overhaul and less than 5000 miles on the trans, I think the long hot extended drive and the type F took out that bushing. After rebuilding it again and using Dexon, it never had any more problems. Just never trusted running type F again in a GM tranny. I've rebuild many since then, and have always just run what it is "supposed" to have.
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Re: transmission fluid... what type?
i use royal purple no problems
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Re: transmission fluid... what type?
I have heard good things about the Amsoil ATF, supposed to lower the temp by 15*. Thinking of using it on my next fluid change.
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