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Type F or Dexron? And WHY???
#1260425
07/01/12 07:18 PM
07/01/12 07:18 PM
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Joined: Jan 2003
Posts: 2,697
Renton Wa
topfueldart
OP
master
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OP
master
Joined: Jan 2003
Posts: 2,697
Renton Wa
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Title pretty much covers it. I know there have been debates on this a hundred times, but I've never heard anything definitive as to why some people prefer type F over the standard Dex/Merc, other than the standard "ive used it for 20 years without issue" response. My entire trans/converter is new, so before just pouring fluid into it I thought id look for opinions. Ive always run the cheapest Parts Master Dex/Merc and havent had any issues, but dont expect I would have with Type F either.
My combo:
9.5 in PTC with Steel Stator
5 Pinion Steel Front Planetary
4 Pinion Rear
Billet Steel Front Drum with bleed hole for Brake
Ultimate Sprag
A&A Clean Neutral Transbrake
6/6 Clutch Packs with Alto Red Eagles and Kolene Steels
Rear of case drilled for Sprag oiling
Relocated Vent
Billet Rear Servo
Etc Etc
Any thoughts?
Thanks
11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.
9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.
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Re: Type F or Dexron? And WHY???
[Re: mikeysmopars]
#1260427
07/01/12 09:05 PM
07/01/12 09:05 PM
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Joined: Dec 2004
Posts: 10,554
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,554
Rittman Ohio
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Maybe a little OT but did you guys ever hear about adding a quart of 30wt. engine oil to your trans fluid? I remember reading an article in Chrysler Power mag about 20 years ago that some race builders say that ATF does not lubricate enough to keep the rollers and bushings from seizing and galling  Sorry for the hi-jack but you don't see too many threads about ATF on here. Gus 
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: Type F or Dexron? And WHY???
[Re: fourgearsavoy]
#1260428
07/01/12 09:20 PM
07/01/12 09:20 PM
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Joined: Jan 2003
Posts: 75,012
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,012
U.S.S.A.
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Quote:
Maybe a little OT but did you guys ever hear about adding a quart of 30wt. engine oil to your trans fluid? I remember reading an article in Chrysler Power mag about 20 years ago that some race builders say that ATF does not lubricate enough to keep the rollers and bushings from seizing and galling
Sorry for the hi-jack but you don't see too many threads about ATF on here.
Gus
Hogwash , millions of 833's were built by Mopar and filled with ATF and they are 100% fine with it ....
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Re: Type F or Dexron? And WHY???
[Re: JohnRR]
#1260429
07/01/12 09:28 PM
07/01/12 09:28 PM
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Joined: Dec 2004
Posts: 10,554
Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,554
Rittman Ohio
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Now thats funny Where's that guy with the pics of the gears from his dads transmission  Gus
64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
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Re: Type F or Dexron? And WHY???
[Re: fourgearsavoy]
#1260430
07/01/12 10:01 PM
07/01/12 10:01 PM
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Joined: Jan 2003
Posts: 27,421
Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I use the Mopar ATF + 4. Why ? Well I worked at a Dodge dealer for 24 years and have a nice stock of it and it works great in my car.  Ron
Last edited by 383man; 07/02/12 01:13 AM.
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Re: Type F or Dexron? And WHY???
[Re: Cuda367]
#1260434
07/02/12 12:49 AM
07/02/12 12:49 AM
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Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
cudabin
super stock
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super stock
Joined: Jan 2004
Posts: 903
Saskatchewan, Canada
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Rick at A&A said to use the Dex/Merc... I have all his goodies in my trans, so I am listening to him!
Cheers,
Arnie
67 Cuda 8.48@ 158.7 mph 1.18 60' 2,600 DA(so far...)
70 Super Bee 440 Six Pack 4-speed. 13.2 @ 104 Stock exhaust/Street tires.
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Re: Type F or Dexron? And WHY???
[Re: JohnRR]
#1260436
07/02/12 10:01 AM
07/02/12 10:01 AM
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Joined: Jan 2003
Posts: 9,999
Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,999
Frostbitefalls MN (Rocky&Bullw...
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Quote:
Quote:
Maybe a little OT but did you guys ever hear about adding a quart of 30wt. engine oil to your trans fluid? I remember reading an article in Chrysler Power mag about 20 years ago that some race builders say that ATF does not lubricate enough to keep the rollers and bushings from seizing and galling
Sorry for the hi-jack but you don't see too many threads about ATF on here.
Gus
Hogwash , millions of 833's were built by Mopar and filled with ATF and they are 100% fine with it ....
Using type F in a transbrake trans I had thrust washers going away very quickly. I rollerized the trans and can run type F now without issue.
A race trans can easily use Dexeron provided the power going through it isn't extreme, (less than 800 hp?) and the thrust washers will appreciate the extra lube. Usually by the time you get to that power level the trans is rollerized anyway.
The factory wanted lube in there for a reason, and I don't argue with the original engineers requirements without knowing exactly what and why I am changing something. The same applies with adding motor oil to type F. You now have an unknown combination, which may be sliprior than standard Dex!
As for slippage, the extra holding isn't really needed till the shift points and torque get really high. A stock trans with a tight torque converter shifting at WOT has to drag a very heavy rotating assembly down a lot of rpm, which means a very big load put on it. I would love to see an engineering type do the math on a stock Hemi shifting at 6000+ rpm and dropping back to say 4500 rpm versus my lighter 528 with all aluminum drum trans shifting at 7100 and only having to pull the motor back to 6600. I bet the stock hemi deal has a tougher situation!
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Type F or Dexron? And WHY???
[Re: gregsdart]
#1260437
07/02/12 11:06 AM
07/02/12 11:06 AM
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Joined: Oct 2003
Posts: 7,506
Az
Crizila
master
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master
Joined: Oct 2003
Posts: 7,506
Az
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CRT needs to chim in here. Big John??????????
Fastest 300
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Re: Type F or Dexron? And WHY???
[Re: topfueldart]
#1260438
07/02/12 01:15 PM
07/02/12 01:15 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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When Pro-Trans first built my trans several years ago they prefered type-F so that`s what I`ve used ever since. When Darrel Parks freshoned it he said he could of put it back together and run it but I didn`t so he freshoned it and installed thrust washers where he could.............that was over 7 years ago and still going strong.
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Type F or Dexron? And WHY???
[Re: Thumperdart]
#1260439
07/02/12 03:40 PM
07/02/12 03:40 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Guy who used to build my trannies( Jim pauquette) Owner of JPT, and for a long time the builder of about anything fast in stock and superstock Ford racing in the country told me dont ever use anything but Type F.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Type F or Dexron? And WHY???
[Re: topfueldart]
#1260440
07/02/12 05:28 PM
07/02/12 05:28 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Type F..... cheapo type F.... never had a trans fail and thats with pretty much stock guts with a trans brake 
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Re: Type F or Dexron? And WHY???
[Re: B3422W5]
#1260441
07/02/12 06:12 PM
07/02/12 06:12 PM
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Joined: Sep 2009
Posts: 176
South Bend, Indiana
mistress
member
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member
Joined: Sep 2009
Posts: 176
South Bend, Indiana
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Quote:
Guy who used to build my trannies( Jim pauquette) Owner of JPT, and for a long time the builder of about anything fast in stock and superstock Ford racing in the country told me dont ever use anything but Type F.
Jim Rebuilt my converter last year for me, great guy, Type F fluid is all i use in my 727. Mostly Coan goodies in my tranny and they will tell you the same. you will get a firmer shift and less clutch slippage with the F
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Re: Type F or Dexron? And WHY???
[Re: sturmenater]
#1260443
07/02/12 10:12 PM
07/02/12 10:12 PM
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Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
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I used Dexron for about 10 years, and then cheap TypeF for about another 10 years. Never even damaged a 727, ever.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: Type F or Dexron? And WHY???
[Re: JohnRR]
#1260444
07/02/12 11:02 PM
07/02/12 11:02 PM
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Joined: Jan 2003
Posts: 5,989
Anoka County, MN
Leigh
master
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master
Joined: Jan 2003
Posts: 5,989
Anoka County, MN
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Quote:
Quote:
Maybe a little OT but did you guys ever hear about adding a quart of 30wt. engine oil to your trans fluid? I remember reading an article in Chrysler Power mag about 20 years ago that some race builders say that ATF does not lubricate enough to keep the rollers and bushings from seizing and galling
Sorry for the hi-jack but you don't see too many threads about ATF on here.
Gus
Hogwash , millions of 833's were built by Mopar and filled with ATF and they are 100% fine with it ....
C.A.F.E.
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