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Type "F" just has more bite, thats about it. The type f was used in ford transmissions with sintered bronze clutch plates and if you used dexron oil these transmissions would slip noticably. Dexron has friction modifiers that cushion shifting.
Racing and type f fluid have always gone hand in hand although type F will not handle high temperatures or protect wear sufaces as well as dexron or synthetic fluids in my opinion.

I have had customers report that temperatures were reduced when switching from type f to dexron and reduced furthur to some synthetic brands or hydraulic oils.


Take care ,Hutch
 

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Type "F" just has more bite, thats about it. The type f was used in ford transmissions with sintered bronze clutch plates and if you used dexron oil these transmissions would slip noticably. Dexron has friction modifiers that cushion shifting.
Racing and type f fluid have always gone hand in hand although type F will not handle high temperatures or protect wear sufaces as well as dexron or synthetic fluids in my opinion.

I have had customers report that temperatures were reduced when switching from type f to dexron and reduced furthur to some synthetic brands or hydraulic oils.


Take care ,Hutch
can these be mixed? In other words, standard trans service that has had dexron, drained and refilled the balance with Type F.
 

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Here's some good info on tractor fluids....I recently switched to Case "Hy-tran" in my glide to see if it helps with clutch slippage or if it brings the flash stall down any. Its pretty inexpensive stuff too compared to synthetic. I was running straight synthetic Dexron.

http://www.theturboforums.com/smf/index.php?topic=58907.200


Craig
 

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I have been running a Chevron Hyd (w/ a little f for color) in alot of stuff these days. It works fine plus it comes in 5 Gallon buckets.
 

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Trans Fluid????

Over the years we learned not 1 type of fluid works best for all aplications

For lower hp applications including street a synthetic type dexron fluid resists vistcosity change well and provides adequate gear train protection , Because it's blended in a synthetic process , there is less friction within itself so you'll likely save a couple of hp

For 1000+ hp aplications were high RPM's , Torque , and heavy weight are a factor then we recomend Swepco's 714 20 weight ,[ www.swepcousa.com ] or John Deere Hygaurd hydraulic transmission fluid , these we have found do the best at protecting the gear train by reducing the friction between the gear teeth , but don't try to suck the Johny stuff through anything but a screen type filter , it's speced at 60 weight
 

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Many of the quick lubes around here use DexIII/Merc in EVERYTHING, and have almost NO failures. (Scary, I know...) I guess if you only change the fluid every 100-150,000 miles, ANY new fluid would be better.

My company uses Texaco's universal ATF any vehicles that require Dex, Merc/MercV, +4, Honda, Mitsu, and Toyota. Beyond that, we use Merc SP for the new PowerStrokes, and Dex VI for new GM stuff.

And Type F in the Powerglide. ;)
 

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quickwrench....I think Chris was specifically referring to race trannies not your grandma's oldsmobile.

R/T......I mixed a quart or so of regular Dexron atf with the Case Hy-tran just to give it some color. The tractor fluids are clear.

Craig
 

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Over the years we learned not 1 type of fluid works best for all aplications

For 1000+ hp aplications were high RPM's , Torque , and heavy weight are a factor then we recomend Swepco's 714 20 weight ,[ www.swepcousa.com ] or John Deere Hygaurd hydraulic transmission fluid , these we have found do the best at protecting the gear train by reducing the friction between the gear teeth , but don't try to suck the Johny stuff through anything but a screen type filter , it's speced at 60 weight
Do you know the part number for the screen type filter for a th400. The local auto stores around me have never heard of a screen filter for a th400.
 

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Over the years we learned not 1 type of fluid works best for all aplications

For lower hp applications including street a synthetic type dexron fluid resists vistcosity change well and provides adequate gear train protection , Because it's blended in a synthetic process , there is less friction within itself so you'll likely save a couple of hp

For 1000+ hp aplications were high RPM's , Torque , and heavy weight are a factor then we recomend Swepco's 714 20 weight ,[ www.swepcousa.com ] or John Deere Hygaurd hydraulic transmission fluid , these we have found do the best at protecting the gear train by reducing the friction between the gear teeth , but don't try to suck the Johny stuff through anything but a screen type filter , it's speced at 60 weight
Hey Lenny do you recommend it in my Aod?? CAn I get a screen filter from you???
 
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