Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
If it's clear coated then treat it like oxidized paint - use some white rubbing compound and buff it out. If it's not coated and is really aluminum, you can shine it up with some 0000 steel wool.
I have found that Flitz is awesome on Aluminum. Combine it with their buff Chammy wheel for a drill and you will have that thing bright and shiny in no time flat.