Type "F" Tranny Fluid ?
#1278077
08/02/12 07:46 AM
08/02/12 07:46 AM
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Joined: Jan 2003
Posts: 2,179 Walton, Indiana
TimS
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,179
Walton, Indiana
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Does it hurt to put Type F tranny fluid in a Mopar instead of the Dexron?
1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver
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Re: Type "F" Tranny Fluid ?
[Re: TimS]
#1278079
08/02/12 08:19 AM
08/02/12 08:19 AM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Quote:
Does it hurt to put Type F tranny fluid in a Mopar instead of the Dexron?
No. it will work fine in it and is recomended by most people for a firmer shift.
just picked up a case of type F for my BB 727 swap this weekend myself.
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Re: Type "F" Tranny Fluid ?
[Re: Dodgem]
#1278082
08/02/12 06:37 PM
08/02/12 06:37 PM
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Joined: Mar 2007
Posts: 3,285 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,285
West Coast, USA
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One of the regular village bragarts over on the slantsix board was bashing the use of Type F fluid in Mopar transmissions. He claims it degrades the bands and clutches because in the petroleum based form, it can't handle the heat as well as Dexron 2.
While there is some truth to the temperature rating of petrolium Type F as compared to petrolium Dexron, the thermal problem goes away when you switch to synthetic Type F.
In the synthetic form, the Type F can handle much higher thermal loads while still providing enhanced thermal stability and lubricity than petrolium transmision fluids, regadless of the type of fluid ie Dextron or Type F.
If you are going to use Type F, pay a bit more and run the synthetic Type F.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: Type "F" Tranny Fluid ?
[Re: Kern Dog]
#1278089
08/02/12 10:29 PM
08/02/12 10:29 PM
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Joined: Jan 2003
Posts: 2,179 Walton, Indiana
TimS
OP
top fuel
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OP
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Walton, Indiana
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I'll try it in my 69 Super Bee. Thanks very much for the input.
1968 Barracuda Fastback 318-2BBL 904 2.76 Frost Blue Survivor 1970 Roadrunner 440+6 BBL 727 AT 4.10 SG Dana Blue Fire Metallic 1971 Cuda 340-4 BBL 4spd 3.91 SG Curious Yellow 1972 Barracuda 318-2 BBL 904 AT 3.23 1 Legger Tor Red/White Vinyl Top 2007 Dodge Ram 1500 5.7 Hemi AT Patriot Blue 2011 Dodge Challenger RT 5.7 Hemi 6spd 392 SG Triple Black 2014 Dodge Charger RT Max AWD 5.7 Hemi AT 305 Billet Silver
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Re: Type "F" Tranny Fluid ?
[Re: Chris2581]
#1278091
08/19/12 01:37 PM
08/19/12 01:37 PM
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Joined: Dec 2007
Posts: 587 minot north dakota
ledft79
mopar
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mopar
Joined: Dec 2007
Posts: 587
minot north dakota
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I was told 35 years ago, Type F only in mopars. That's all that I've ever put in them. I don't know as though Dextron would hurt anything, but Type F for me.
DRIVE EM, DONT HIDE EM.
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Re: Type "F" Tranny Fluid ?
[Re: savoy64]
#1278093
08/19/12 04:16 PM
08/19/12 04:16 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
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Posts: 27,421
Balt. Md
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I have a good supply of ATF+4 since I worked at a Dodge dealer for 24 years. All my brother and I have ever used is the Mopar ATF+. It shifts great and looked like brand new when I dropped the pan. I dont think I will drain it and add type F to see if it is any faster. Ron
Last edited by 383man; 08/19/12 04:17 PM.
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Re: Type "F" Tranny Fluid ?
[Re: A12]
#1278095
08/19/12 05:15 PM
08/19/12 05:15 PM
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Joined: Jan 2003
Posts: 25,823 Rio Linda, CA
John_Kunkel
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Too Many Posts
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Posts: 25,823
Rio Linda, CA
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It's not about "cushioning", it's all about the coefficient of friction (the ratio of the force of friction between two bodies). Type F has a more aggressive COF.
The INTERNET, the MISinformation superhighway
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Re: Type "F" Tranny Fluid ?
[Re: John_Kunkel]
#1278096
08/19/12 06:07 PM
08/19/12 06:07 PM
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Joined: Jan 2003
Posts: 21,514 N.E. OHIO, USA
A12
Too Many Posts
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Too Many Posts
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N.E. OHIO, USA
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Quote:
It's not about "cushioning", it's all about the coefficient of friction (the ratio of the force of friction between two bodies). Type F has a more aggressive COF.
John you might want to do a search for cushioning agents and clutches to see what I meant. We had these issues for years in motorcycle wet clutches and there are agents that are meant to cushion or soften clutch engagement and at the worst cause clutch slippage. Won't argue the COF but what determines that is the fluid or oil and the type of friction modifiers that are added to them. Type F has less friction modifiers and or cushioning agents ADDED to it than Dextron or other transmission fluids and transmission oils so it has a higher COF
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