Transmission fluid

[MoparDan]

Please refresh my memory, what kind of transmission fluid do our cars use?

 

[69-]

ATF-3 / Dexron should suffice. As far as I remember they are interchangable with ATF-4, -4+

If you're talking 904/727.

 

[MoparDan]

Yah 904

 

[69-]

These oldschool trannys are not that picky on the fluid, I'd say.

My 727's (2x 69's and 1x 79's) and the 904 (LeBaron, 79) all get that Dexron 3.

 

[AMC Diplomat]

I use ATF+4. Welcome back!

 

[M_Body_Coupe]

Whaattt....???? No "you need Type-F" posts????

OK ok, so yeah, with a factory install you do not - in fact with a lock-up converter Type-F could actually be a totally wrong way to go....but way back when, when the performance bug bit me, I do recall draining that factory fill and going to Type-F, and oh my, there was a "butt-meter" difference.

Now what I can not tell you is whether I did anything else at that time, such as cranking up the line pressure, or doing any basic shift-kit work, so take this with a grain of salt.

However, Type-F is all I have ever used since...mind you, this is all rebuilt transmission type of stuff with a pile of adjustments thrown in, race clutch packs, race bands, etc.

 

[MoparDan]

I use ATF+4. Welcome back!

Thanks, haven't had a phone or internet access in awhile...

 

[MoparDan]

ATF-3 / Dexron should suffice. As far as I remember they are interchangable with ATF-4, -4+

If you're talking 904/727.

Dexron what? 2? 3?

 

[MoparDan]

Also how many quarts does it take? There appears to be no fuild in it at all for some reason

 

[69-]

Service manual (79) says Dexron or Dexron II.
Start with 2 quarts, then check level in neutral while idling and add up to ADD mark (if at 80F operating temp) or up to FULL mark if at operating temperature.

 

[AMC Diplomat]

Also how many quarts does it take? There appears to be no fuild in it at all for some reason

If I remember right, dropping the pan takes 3 or 4 quarts out of it. Start with 2 quartsband go from there.

Mopar had a TSB back in 2004 that said ATF+4 was backwards compatible with ATF+2 and ATF+3. You might get lucky on price if you check around different stores for ATF+4 and sometimes I see it on Facebook marketplace pretty cheap.

 

[volare 1977]

I found some dexron 2 on marketplace. There is some out there but you just have to search. My 727 took about 4 1/2 quarts on the filter change. I would assume a 904 takes less.

 

[volare 1977]

Guy has a case of GM dexron 2 on market place. Vintage GM Delco Dexron II Automatic Transmission Fluid Quart Cans Case New Old Stock

 

[AMC Diplomat]

I wouldn't use Dexron in an A998 or A999, but that's just me

 

[80mirada]

ATF+4 is the current recommendation, it plays well with the older fluids, and has very good characteristics. The latest Dexron will work as well. Type-F is good in a hi-performance build, but is an old fluid that lockup torque converters don't like.

 

[MoparDan]

Fluid and filter were last changed around 2019, not sure what kind of fluid they used, they told me I needed a new torque converter, but was way out of my price range at the time, so I'm assuming it's at least ok

 

[MoparDan]

Is this the right stuff?

 

[AMC Diplomat]

Is this the right stuff?View attachment 53689View attachment 53690

View attachment 53688

There are guys here who are gonna say yes. I say no.

 

[Oldiron440]

The old Ford Type F is all that is needed, now Ford type F is just standard hydraulic fluid that has a red dye in it.
If you have a higher stall converter where the fluid will run a higher temperature then you should consider using a synthetic transmission fluid.

 

[AMC Diplomat]

Type F is an even worse idea than Dexron