painting radiator

I've never heard of any ill effects from painting the radiator.

 

"Heat transfer is the transition of thermal energy from a hotter mass to a cooler mass. When an object is at a different temperature than its surroundings or another object, transfer of thermal energy, also known as heat flow, or heat exchange, occurs in such a way that the body and the surroundings reach thermal equilibrium; this means that they are at the same temperature. Heat transfer always occurs from a higher-temperature object to a cooler-temperature one as described by the second law of thermodynamics or the Clausius statement. Where there is a temperature difference between objects in proximity, heat transfer between them can never be stopped; it can only be slowed.
Thermal insulators are materials specifically designed to reduce the flow of heat by limiting conduction, convection, or both. Radiant barriers are materials which reflect radiation and therefore reduce the flow of heat from radiation sources. Good insulators are not necessarily good radiant barriers, and vice versa. Metal, for instance, is an excellent reflector and poor insulator."

i guess the only way to truly test this is to test the temp of one painted and one not painted....i think the bottom line is it will not effect it enough to notice. Plenty of people here have done it and have not had there trucks overheat.

 

DON't use bedliner !

 

Used my infrared thermometer after driving to work to measure the temperature. Not even above 100 degrees.

 

you mean the condensor?its in front of the radiator.shouldnt hurt it.