[Kearton]

Originally Posted by planenut

Roy, the vertical metal brake pipes in the front wheel arches, behind the wheels, meet all sorts of attacks from everything that comes up around the wheels, therefore, they rust. However, with a good clean with emery paper, so long as good metal is revealed, they can be treated and pass the test (I use plumbers emery ribbon). Nothing should be added to pipes that hide them, i.e. heavy grease. One can however, place a dose of grease on and then wipe the excess off.

Another alternative is to paint them with clear lacquer after cleaning.