50/50 ATF acetone mix for stuck engine ?????

[GLJ]

ATF (Dextron) has more detergent in it than Type F. Also has more slippery stuff in it.
Type F has no friction modifiers in it so the clutch plates grab better.
I was always told back in the day (70s to 90s) to never mix them.
Now in racing applications guys did run Type F in GM transmissions. In order to do so they usually started out with a freshly rebuilt trans with new clutch disks and a flushed out torque converter. Then they used 100% Type F.
Things may have changed today. It's been over 30 years since I rebuilt a automatic trans.

 

[JJames]

I tried this on a seriously siezed T 500 motor. I don't recommend it . It does separate. Acetone flashes off fast. I realize that most penetrants contain some type of solvent but I've had to much exposure as it is, hate acetone.

 

[JJames]

Did a little search and found the following: You have to use non synthetic dextron II, the synthetic dex III will not mix at all with acetone. Another person suggested adding a Basil Leaf.

Basil?