Whats the correct trans. fluid for a C6 automatic? I've always thought it was type F but in the haynes manual i just bought it says dexron 2 series D. I've been using type F, will it mess up my trans?

 

The C6 should use type F. I use type F in my 72 with good results. This is what Ford recommends. Perhaps late models use Dextron/Mercon. Don't know if a rebuild with more modern clutches and etc would excuse the use of Dextron as the friction coefficient is different. At least that is my understanding of the differences between the fluids.

 

Type F, I don't have a clue what type 2 is.

John

 

The type F fluid is correct if your Trans, has not been rebuilt. IF your trans has been rebuilt then the seals and clutch facings are no longer made of the same material so it is reccomended that you use the dexron/mercon type fluid. P.S. I used to be a certified rebuilder What I remember the most about Fords is that the type F fluid tended to varnish the inside of the tranny as time went on which made clean up a nightmare. The dexron/mercon doesnt seem to have this problem.

 

If your tranny has been "rebuilt" then it proabbly needs Dextron, if it has the old original parts in it, then type F. Newer parts are made out of different materials and require the dextron fluid ...

 

My trans is a reman so what do i use?

 

Can you ask the rebuilder?

I just had two trannies rebuilt, a C6, and a Cruse O Matic the rebuilder put F in both

 

The local parts guy sold me dexron for mine and I put it in, but then too late, read the dipstick that stated type F. It seems to work OK, but I notice a little slip on full throttle shifts. I am going to change it to type F when I find a lube place that can suck it all out.
Here is some email I got from the Penzoil/Quaker state folks:

==================================
Thank you for your email.
This vehicle is calling for a Type F fluid. What you will need to do is to
take the car back to the lubrication center and have them to drain the
Dexron III out and have them to put the Type F fluid into your vehicle. It
won't hurt the transmission, but it could cause the transmission to slip.
If you have any further questions please call our Technical Services
Department at 800-458-4998.

Thank You,


Pennzoil-Quaker State Co.
Consumer Inquiry Department
phone: 1-800-Best-Oil
fax: 713-546-3821
email: Inet-QS Site Information

> -----Original Message-----
> From: Rod Robertson [SMTP:rodr@cup.hp.com]
> Sent: Tuesday, August 24, 1999 4:48 PM
> To: Inet-QSSiteInformation@PZLQS.com
> Subject: ATF Type F
>
> The local car parts guys gave me dexron III when I went to drain and
> refill my 1973 Ford C6
> automatic. I then noticed the dipstick said to use Type F. Will Dexron
> III hurt my tranny?
> Thanks,
> Rod Robertson

 

Don't forget the fluid that is in the torque converter.

John

 

 

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1964/76 C4 & 1966/76 C6 = Type F ATF / 1977/81 C4 & 1977/97 C6 = Mercon aka Dexron II.