What type and brand atf should I use for my 67 TH 400. The trans has never been rebuilt.
I looked around and have been slightly confused by the choices that are out there.

 

It probably used an early Dexron fluid type I, II, III. My brain only goes back to Type III so I'm not even sure if I and II were made.
Regardless of all that you can use any Dexron made today as they cover all previous versions. Is it Dexron VI now?

 

I think they are up to Dextron VI now. The newer versions are supposed to be backwards compatible, but who knows. I've read that GM has stopped licensing the name "Dextron III", which is why that version is difficult to find.

 

Dexron IV is automatically a synthetic blend and a thinner weight. I have had no issues running it but my transmissions had fresh seals. I would just get any brand you like of Dexron 3 and you will be good.

 

Dextron 3 around me is gone for good and everything has mercon which from what I know will cause slipping.

 

I haven't heard that before. I just checked the bottles in the garage and they say compatable with Dexron III / Mercon.

 

Most of the stuff I have been finding is a DEX/mercon. So I have probably put a couple of quarts in over the last five years (ultra slow leak) No problems with transmission.

Pat

 

Just to bust a few chops -

Someone brought this to my attention a few months ago and I didn't believe him... untl I checked:

It's DEXRON, not DEXTRON.

I know. I grew up with everybody saying "Dextron," and must've read a thousand bottles and cans on shelves and in my hands over the decades, and I never once read the word correctly. Until I was corrected here.

Go out to the garage and look at a bottle.



- Eric

 

[QUOTE=MDchanic;966310]Just to bust a few chops -


It's DEXRON, not DEXTRON.


Go out to the garage and look at a bottle.




Oh no,
Joe's going to have a hard time eating his Wheaties this morning haha.

 

I always use type F, has a friction additive (less slippage on shift) Ford needed all the help they could get and I just use it to my advantage.

JMO

Johnny

 

O'Reilly has a high mileage fluid that says for use in GM and Ford products and says on the label it is a substitute for Dexron III and Mercon. I use it in my 54.

 

Yeah, I've been aware of that for as long as I've been driving.

 

Yeah, I don't think I've ever heard anyone pronounce it correctly, or of I did, I didn't notice.

Could be a regional accent thing.

- Eric

 

I worked in an auto parts store in high school so I became very familiar with the labels on all the cans I had to put on the shelves and stack for displays. Customers probably asked for Dextron but since we had so many folks calling stuff by wrong names I wouldn't have really noticed.

 

Yeah, I screw that up all the time.

So Eric's now 1-for-2 in the last 24 hours.

 

I use this in a th-400 and a th-350. It's "liquid engineering," hah.

 

I have always used Redline ATF. Both the D4 and D6 fluids meet or exceed Dexron III, the D6 meets or exceeds Dexron VI. I've never had an issue and they hold up to heat quite well.

 

Back in the late '80s I worked as a fleet mechanic for a carrot farm, Bunny Love Carrots. They don't exist anymore but the company that bought them out still uses the name for their organic line. Anyway, we used Dexron II for everything, bought it in 55 gallon drums. Ford, Chrysler, Mercedes, even manuals. Non GM vehicles would have the transmissions drained and the fluid replaced with the Dexron. The shop managers said as long as all of the other fluid was removed the Dex would work just fine in all of them. I guess it did 'cause we had fleet vehicles with over 100,000 hard miles on them.

I was corrected on the name at a young age when I worked at Cal Auto Parts, back in the late '70s. The boss was kind of a jerk about getting all the names right.