Synthetic ATF instead of type F
#1
Synthetic ATF instead of type F
I got a super deal on 16 quarts of Penzoil synthetic ATF. It says it'll work for Mercon and dextron applications. I have a 1977 small block C-6 that I've been saving for 20 years. Dug it out and it says to use type F. What happens if I use the synthetic? Would the syn. be an improvement or is there that much difference that I'll screw my trans? Hate to have to give the stuff away and use the old dino oil.
#2
Take a look at this thread to save me a lot of typing:
https://www.ford-trucks.com/forums/1...uld-i-use.html
If your C6 was assembled pre- May 1st 1976, and was not rebuilt later on, then you need to use Type F.
From the original Ford trans documentation, printed in all capitals, on a bright yellow background so everyone would see it, was the warning:
"Note: Never install CJ fluid in a transmission designed for Type F. The transmission won't hold together."
Just substitute "Dexron/Mercon" for where it says "CJ fluid", as Dexron/Mercon superseded CJ.
https://www.ford-trucks.com/forums/1...uld-i-use.html
If your C6 was assembled pre- May 1st 1976, and was not rebuilt later on, then you need to use Type F.
From the original Ford trans documentation, printed in all capitals, on a bright yellow background so everyone would see it, was the warning:
"Note: Never install CJ fluid in a transmission designed for Type F. The transmission won't hold together."
Just substitute "Dexron/Mercon" for where it says "CJ fluid", as Dexron/Mercon superseded CJ.
#3
atf
I have no way of telling whether it was built before 5-1-76 but the dipstick says type F so it probably was. I pulled it out of a wrecked school bus in '92 and I'm pretty sure it was never touched. It's a shame I can't use the whiz-bang juice since I got such a good deal and synthetics are superior.
My local NAPA has ATF for $3/qt so I'll get 16? of them. Type F.
My local NAPA has ATF for $3/qt so I'll get 16? of them. Type F.
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