The winner however, was a home brew of ATF and acetone, lol.
Edit: This article was posted on ZZP, but came out of Machinist’s Workshop magazine
I saw that too. It was a 50/50 mix of the two. Don't make too much at a time though -- the acetone evaporates real fast if not in a tightly sealed container. I just knew I saved that quart of Type F for a good reason.