Be careful with wheels this old. I used Meguire's and Eagle One, they pretty much removed the finish. I have read here that P21S is the mildest and most effective. Any brush intended for wheels should be fine.

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Mr. BILL

91 300E 120K
90 300SE 275K (sold)
92 BMW 525iM 120K
90 BMW 525iA 175K
85 300D 175K (sold)
84 300SD 245K (sold)