Mike, I agree with shawn, I have used regular non heat paint on many engine parts, (water pumps, valve covers,) etc. with no problems. I would suggest if you go with spray can, go to an auto body supply store, a reputable place that sells DuPont or PPG automotive finishes. Buy the very best paint they have. I have found some real junk at hardware and big box stores. also surface needs to be super clean, and you should always use high quality primer. Hope this helps, Joe