I never finished the story on my radiator. I had a thin coat of paint on the radiator the day I got it home but it was humid and turned the paint milky. I later painted it again and had a couple cans of engine paint. Turned out that they must have had some paint mixed up on the shelf because one of the cans was interior vinyl paint. I did not notice till I already painted the radiator. I went over that with the correct paint but it has been bothering me because it is not right. I am now going to paint a scrap radiator I have with the same paint in the same coats of each style of paint. After it is cured I will start testing ways to strip it off. I hope I can come up with a way to strip it and not hurt the fins or copper. When I figure out the best way I will strip my good radiator. I am wondering if I soak it in a pan of lacquer thinner if that would work good enough. I would rather not use paint stripper but may try it also. Any ideas? Even thought about turning the air down on my blast cabinet and trying to bead blast it but I would be shaking glass out of it for a really long time.