Stubborn primer- OEM 1954 GM(?)
Hey guys, I'm in the process of stripping and prepping the body on my 54 Belair. What's left of the paint (original? I think?) has been coming off pretty easily, but anywhere there is still primer (also original?) its been pretty much laughing at everything I've been throwing at it, even aircraft stripper. Anybody know what this stuff could be? I've heard rumors that in the late 40's-50's GM started playing with early epoxy primers and this stuff definitely seems like it could be. I'm planning on doing the entire body in epoxy primer anyways, so can I just leave whatever is left on there and go right over it, or should I really get every inch of the car down to bare metal?
fyi the stuff in question is like a red-brown oxide color, can get pics if it helps at all