x 2 for most of the suggestions. Always had success with a good soak in kero or diesel. Welding a thick washer on and then a big nut.
Various US websites are strong on acetone ATF mixes and also some other "exotic" brews.
Patience is best of all !!!!
Well you can and we do and things get regularly debunked. Hence as I keep acetone I will give it a whirl
Will admit my doubts over kerosene but when opertunity arises next