Quote: the heat in the engine compartment area definetly knocks the gloss out of the finish. Im not sure about the original finish on the radiators but it dosent take long to make semi gloss turn into flat black under the hood.
I wouldnt use gloss as its just too shiney for my taste but I would use the semi gloss and be prepared to repaint in a few years.
Huh? Gloss holds up just fine under heat. I paint radiators semi gloss though, and they are still semi gloss years later.
