Quote: if painting a bare core made it transfer heat better...then why do all new autos come with a bare aluminum radiator core?
To save money I would imagine...since the tanks are plastic, and the core is aluminum, there is nothing that will oxidize and look bad to consumers, so why not leave it ?
And a buddy of mine here worked at Alpine for quite a long time, he was in amplifier design for a while and they did a bunch of tests to see which was the best coating to help shed head from them...a matte black finish tested (and as said, should have basically) to be the best thing to help them shed heat.
