April 10, 201311 yr Author Different colours = different grades. Info here but use fleabay when you buy. LINKY Thanks. At a glance, seems like the maroon 'general purpose' one is good for cleaning chrome and such, so I might give that a try. I wonder if they do them as a small drill-bit to get in between all the spokes and awkward places. I would love to just tear the wheel apart and do it all 'properly', but the tyre would have to come off and the wheel would need to be trued afterwards etc.
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