Well i will probally be lynched for this but what is the best tranny fluid to use? This will be fresh rebuilt 904,so mabey synthetic?
thanks

TYpe F. I'm not worried about a fight, I have on my flame retardant underwear.

Good Thinking

Agree, type "F"

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

[quote="1969ron"]hi, for racing only, use type f or synth. for more street, use mercon/dextron. type f has less friction modifiers to allow quicker "bite" on bands and clutches. the problem for street driving with type f occurs on the 2-3 shift, when the bands and clutches are applying and realeasing. for the split second that they overlap each other on the shift cycle , the type f fluid, because it's "grippy", hangs on to the drum band longer which shortens clutch pack life. you don't want a band hanging up, while the little clutch packs are trying to apply pressure. there are tech articles that show how street driving wears the cluch packs sooner with type f fluid. read and search before you pour it in. ron .[/quote]

Is this true? This will be my daily driver and i need the best! still say type F?

There are two opinions on this. Factory fill is Dexron, if you are worried, use this. However, years ago, back in the 70's, there were some lawsuits, arising from the wrong fluid being installed. The fluid manufactorers, sent a "info sheet" to all the part suppliers. This stated, "Type "F" could be used in transmisions that called for Dexron, but Dexron could not be used in transmissions that called for type "F"". I will say this does not include the import transmissions, or the "new" electronuc transmissions, because they were not around then. I run type "F" in all my 904/727 transmisions, and never had a problem.

_________________
Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

Is there a "best" brand to type F?

hi, the use of type f transmission fluid in torqueflites in place of the factory specified dextron fluid has been a common trick for decades. type f fluid, which was designed by ford for ford transmissions, has different frictional qualities than dextron fluid. dextron is more slippery, providing smoother engagement of the clutches and bands. using type f tran fluid will cause the friction linings of the clutches and bands to be a bit more grabby, giving the feel of a more positive shift, but there is a very serious drawback. when the kickdown band is applied, it wraps tightly around the drum. without the friction modifiers in dextron fluid, it can stick to the drum and continue to hold even after the servo has released its pressure on the band. during the 2-3 upshift, if the kickdown band continues to hug the drum while the front clutches begin to apply, bad bind-up and serious 2-3 overlap will occur until the band releases its hold on the drum. this dramatically shortens the life of the front clutch pack and hampers performance. using the correct dextron fluid will prevent this from happening. unless you like rebuilding your transmission. type f is for fords. dextron is for mopars. ron

Ford used Type F because of the band material they used. Using Dexron would wipe the bands out in no time.

B&M Trick Shuft is nothing more than Type F fluid with blue dye in it and a big price tag.

I have used Type F forever. It is also reccommended by the man who builds my transmissions, and he is a factory trained trans tech at a Chrysler dealership.

Can't we all just get along?

_________________
Official Cookie and Mater Tormentor.

Actually Ford hasn't used Type F in years, they use Mercon now, a Dexron II/III/IV work alike. Using Dexron in a Ford trans that used type F won't destroy the bands on its own, what it does is makes the shift mushier, like a GM, which in essence is just slippage, and that will eventually wipe out the trans. Type F just has different friction modifiers in it, and you can use it in and mopar or GM trans that specifies Dexron, or type 7176 ATF+3, that is if you like the harsher (relative term) shift. I would assume most of us here do, so go ahead and use type F....

_________________
"That thing gotta HEMI in it??"

Thanks for all the replies i will run type f in my 318 combo i am building for fun so if it ruins the trans at least its not my slant!\
happy holidays all!!

Can Type F and Dexron/Mercon be blended to get a desired tradeoff between soft and firmer shift?

NO! Do not under any circumstances try this! You'll end up with a nice jelly in your transmission. The additive packs in the fluids are not compatible. Use either one or the other. If you want firmer go with the type F it wont hurt your transmission. If you like the shift of an old Newport then use the Dexron III or the Mopar ATF+3...type 7176. You could use the new ATF+4, but it doesn't mix well with the 7176 or dexron. All the new (1999-up) trannys use ATF+4, so its really overkill for the older trannys. Plus the stuff is about 20 bucks a gallon.

_________________
"That thing gotta HEMI in it??"

Cool thanks for the heads up.
I'm thinking of putting a shift kit in this Duster in order to firm up the shifts. Nothing radical just a bit quicker transition between gears.
Didn't know if that was by far the best way of doing this or if a swap to type F fluid would be.
I'll definitely avoid mixing though.

I have been using the wallmart cheapie type F in my A518 for years with no problems. I think it is Super tech? i just change is every year or 2. That is with heavy street use, Many passes at the track, and over 150,000 miles... (the A518 takes about 14 quarts with a filter change)
Frank