Are they polished aluminum? If so, old truckers trick. Once you have them polished. Get some corn starch a soft cloth and rub them down with the corn starch. It will help keep them clean and repel water. I've tried it, it does work. I am guessing it fills the pores with corn starch.
A forum community dedicated to Dodge Cummins Diesel truck owners and enthusiasts. Come join the discussion about reviews, drivetrain swaps, turbos, modifications, classifieds, builds, troubleshooting, maintenance, and more!