Originally Posted by
3alarmer
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...I continue to have very good luck with difficult to remove threaded stuff using a 50/50 mix of ATF (from the auto store) and acetone (from the paint dept at Home Depot) as the penetrating oil. You need to keep it in a bottle made from a plastic that is acetone proof..I use an old empty small TriFlow bottle. Wipe it off any rubber or plastic parts you get it on.
There is an old formula used by gunsmiths known as "Ed's Red" to disassemble rusty parts and as a bore cleaner. It's an equal parts mixture of Dexron II or III ATF, OMS and Acetone. It's supposed to be magic.