I just sprayed my alloy rims with Meguiar`s HOT RIMS COOL CARE ALL WHEEL CLEANER. The metal disc (have no idea what this part is called) that is visible behind the hub of rim became discolored. It looks like an instant corrosion or streak brown/orange in color. If I run my finger nail and scrape, it does come off. How do I clean this? First off, it`s impossible for me to stick my hands through the opening. Is there any thing I can spray on it to clean it?
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