The Marvel stuff is fast. I'm not certain you need the acetone in the "Ed's Red" update of the Hatcher formula. I had good success last week breaking the tang bolts in a Manufrance Ideal with my Ed's Red mix and I did not add acetone the last time I mixed the stuff. To boil this down, a quart of ATF, a quart of mineral spirits, and a gallon of odorless kerosene are easily available almost everywhere these days but not quite as cheap or convenient as just buying a can of penetrating oil. The ATF is nasty stuff, as already pointed out, and will do a job on your hands if you take a bath in it.
jack
