black oil cooler

I`ve got a oil cooler off a 1.9GTI that I`m gonna fit to my 1.6...
Bascily i was wondering why they are black...? surley that attracts heat...?
or does it radiate heat better...?

Shouldn`t it be silver or white...

 

If it is in direct sunlight, it would absorb heat, but black also
dissipates heat better if the surroundings are cooler. That's why it
is nonsense to paint the central heating things white

HTH

Norman

 

Hi,

Both. It just depends on whether it's hotter or cooler than its
surroundings.

Nope - both are reflective, white most of all. (The colour you see is
the reflected part of the incident spectrum. In the case of white, in white
light, that's all of it.)

(o)x

 

Thanks

 

Welkam )