th350 trans w/type f fluid

Old 03-06-2009, 06:03 PM
  #1  
kicker91laser
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Default th350 trans w/type f fluid

I bought a th350/10" stall with a mild performance rebuild w/1k on it. The previous owner said he ran type f fluid in it and said he was told that it can withstand the heat better. I have since talked to a few friends who are more involded with domestics than I am and said they have never heard of running type f. Should I continue to use type f in the trans when I install it, or should I drain the trans and converter and swap over to something else? Any suggestions are welcome, thanks guys.
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Old 03-06-2009, 09:11 PM
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jmarksdragster
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Synthetics are the best, they don't break down as fast or foam. For a mild street car I wouldn't worry too much, just make sure you have a good cooler on it.
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Old 03-06-2009, 09:24 PM
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Tod74
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I used to put type F in em all the time when I was a teenager ..makes em shift harder( at least I THOUGHT it did :lol: cause someone told ME that) never hurt mine but they were just street trans stuff
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Old 03-06-2009, 09:27 PM
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proclassmonte
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just run dexron fluid, that trans was designed to run on dexron it will give you the best service. I am a transmission rebuilder by trade. synthetics are sometimes a little too slippery.
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Old 03-07-2009, 04:51 PM
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lanham
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I like to run tractor and transmission hydraulic fluid.
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Old 03-07-2009, 05:18 PM
  #6  
lookingaround
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Originally Posted by lanham
I like to run tractor and transmission hydraulic fluid.
ive heard that on quite a few different boards. must be something to it.
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Old 03-08-2009, 08:32 PM
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kicker91laser
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Thanks guys, is there a certain brand of dextron that is best to use? Sorry if these are useless questions, I have always been a manual trans guy in the past :?
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Old 03-13-2009, 04:12 PM
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dimitar
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Use Type F.

Type F has a higher viscosity -> better lubrication.
Type F has higher coefficent of friction -> clutches less likely to slip. (also quicker firmer shifts, not that noticeable).

Type F is much better for high performance than Dexron.

If you can afford it, use synthetic.
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Old 03-13-2009, 11:01 PM
  #9  
cepx111
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Originally Posted by dimitar
Use Type F.

Type F has a higher viscosity -> better lubrication.
Type F has higher coefficent of friction -> clutches less likely to slip. (also quicker firmer shifts, not that noticeable).

Type F is much better for high performance than Dexron.

If you can afford it, use synthetic.
\\


I've heard that too, I've also heard that B/M quickshift is nothing more than type F. Having said that...lol I put mercon in my powerglide, no problems yet. (2 years running)
I think either type F or dexron/mercon or even tractor hydralic fluids will be fine as long as you buy a name brand, dont get walmart or autozone equate stuff here, pay a few bucks more for the name brands.
Cp
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Old 03-14-2009, 07:23 AM
  #10  
chevyart
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Default tranny fluid

i agree with dimitar. use type F. i called all the big tranny companies wthat what i use in my drag car and street car with s 350 turbo in it chevy arthen i rebuilt my tranny (hughes, tci ati and they all recommended type F
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