Why not use a wax coat, like from Sonax. Here are rattlecans with wax available. You apply the coat after cleaning the surfaces very well than apply the wax and that's all you have to do.
The coat is very sticky and it's not easy to remove but not as difficult as the "car underground" protection. I have used it several times, works as said very good, the treated parts will look dirty very fast but that's due to the sticky coating.
You can remove the wax coat with alcohol, ...
PSchrauber screwed with this post 01-01-2013 at 10:00 AM