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Re: Brake caliper corrosion?
From: Fluhr <email@example.com>
>Is there a coating of some sort on the brake calipers Audi uses (G60
>calipers, in particular) to prevent corrosion?
>Part of the caliper that was cleaned,
>though, appears to be oxidizing (or reacting in some manner). The
>shiny gold-ish color metal is turning a sickly-looking gray. I was
>wondering if the wire brush has removed some kind of coating which will
>make the caliper more prone to rusting.
I hope that you were wearing a dust mask when you were cleaning the caliper.
I strongly suspect that the gold-ish colour metal is cadmium plating, which
does turn sort of dull grey when it starts to corrode. I believe that
cadmium is very nasty stuff, highly poisonous.