What tranny fluid do you use?

[Mopar-Charger]

Putting in a shift and will need to replenish the tranny fluid.

Ive been using atf+4 for awhile, but I've head people using type F for better shifting?

What do you use? What is your application?

Thanks,

jake

 

[67Satty]

I use Type F, application is street and 1/8 mile strip.

 

[Greg Ducato]

Type F has a more aggressive friction modifier and used to have a better heat resistance than the old Dexron fluids as used in both GM and Mopar transmissions back when. Todays synthetic fluids are far better than the old style blends and are formulated to work with todays friction materials.

 

[WP29440SE]

I mix a couple quarts of type F with atf4

 

[terzmo]

Type F

 

[Cranky]

Type F has a more aggressive friction modifier and used to have a better heat resistance than the old Dexron fluids as used in both GM and Mopar transmissions back when. Todays synthetic fluids are far better than the old style blends and are formulated to work with todays friction materials.

Exactly what does the Type F do? If the friction is greater for firmer shifts, does that mean it has less lubricity?

 

[Mopar-Charger]

So if I have atf+4 in the torque converter, and I'm going to add Type f that's 100% ok?

 

[Cranky]

For what it's worth, this info comes from http://www.cartechbooks.com/techtips/autotransfluid

Chrysler ATF+4, also called ATE—a synthetic ATF introduced in 1998, it should always be used in any vehicle in which ATF+4 is specified. It can be used in Chrysler vehicles manufactured in prior years, except for minivans from before 2000, which use the 41TE/AE transmission. It is not compatible with Dexron or Mercon fluids.

Ford Type F—an old ATF first introduced in 1967 and used in all Ford products prior to 1977, and in some until 1980; also used in various import vehicles of the period, including Mercury Capri, Jaguar, Mazda, Saab, Toyota, and Volvo. Type F is not compatible with any other ATF. Specifically, it is not compatible with Mercon ATFs.

Right now I have some ATF+4 mixed with Dexron just because of the fact the converter is hard to drain. It's on it's 2nd change in two days with a 3rd about to happen. The truck has 100k miles on it so it if doesn't hold up, well, no great loss I guess. The pan doesn't hold much...maybe 4 quarts or so. I'm going to disconnect a cooler line next and run it until no more fluid comes out and see how much it pumps out. If all it pumps out is around the same amount, I'll drop the pan and see what's left in it and go from there. I'm mainly doing this because my filter became nearly stopped totally up and the trans started buzzing in reverse so I dove in. Talk about nasty....sucker looked like it was sprayed with a thin coating of bed liner! Still works fine tho. When I checked the fluid on the stick, it was dark but still red and didn't smell too bad but things didn't smell too good when I dropped the pan.

 

[WP29440SE]

So if I have atf+4 in the torque converter, and I'm going to add Type f that's 100% ok?

ive been doing it for as long as atf4 has been on the shelf. before that I would mix a couple quarts with dextron II. ive never lost a transmission that was not abused

 

[themechanic]

Transgo TF-2 kit. Dexron III from NAPA in a street application. Cheap fluid and gives crisp shifts.

 

[rrTor-Red]

I had an old Chrysler mech friend of mine rebuild my tranny. He built his own NHRA sanctioned Mopar from the ground up. He builds his own engines, trannys, rearends.

When he built mine, he said GTX+4 would be a good one