Quote:
Originally Posted by nick325xit 5spd
I *only* recommend this as an absolute last resort, but if either Sonax or Meguiar's wheel brightener fail (I have both), the last ditch option is literally muriatic acid. You're taking a risk with your wheel finish, but it works. It did NOT damage the finish when I used it, but YMMV. (The risk goes up dramatically if the wheels have been refinished.)
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Actually the stuff professional shops use to clean wheels is quite strong hydrocloric acid.
Sonus Aluminum Restore is the best commercial product I've used and very close to professional stuff.