So I have come into possession of a revolver that was "preserved" in cooking oil. It's not oily, but rather covered in a sticky goo like that around a deep fryer. I can manually scrub the parts I can get at but even disassembled I can't get everything. I've tried boiling the parts and even automotive brake parts cleaner, with no luck. Anyone have any ideas? *Cheap little .22, not worth spending much money on.