Oil Pan Paint

[Chamberpains]

Ya, that sounds like a nightmare waiting to destroy a pile of filters and any bearing it can. What ever solvent you used I would put a huge warning on it (don't use on paint) if it softened that hard paint on the inside of the pan.

Is this pan off the old cummins you where rebuilding? Poop brown is the color of the old Cummins 350 engines.