The black Radiator pipes on my k4 is slowly turning white-ish, dont know if its just polish residue or what, but would like some advice (Calling Kwak zzr..
) on what best to clean them with and, more to the point, to keep them looking black.
P.s already tried wd40 to clean them....works fine but comes back all discoloured after a few days.
cheers in advance...