The stock rims on my 1987 124 model benz are turning a whitish color (badly oxidized?) and have streaks that I can't clean. It seems like I need something more than just a standard wheel cleaning product, but rather I need to somehow restore the wheels with some sort of polishing. I just don't know how to proceed, what kind of scrubbing brush/pad to use, or what cleaning/polishing product to use. Anyone have any ideas?