That engine's radiator would have to be painted black.
Racist.
Y'know, I went back in and inserted the word "painted" just to avoid such baseless and unfair allegations.
So now I guess we have to go back through all the literature regarding emissivity of "black bodies" and change everything to read "perfect emitter or receiver of radiation" or some such to satisfy the scientists and the antifa fools all at the same time.
A tough job. Especially since the antifa fools never seem to be satisfied with anything.
Terry, 230RN