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2 Comments

  1. Depends on what’s causing it to be that color. But I would start with Dawn power wash and a brush.

  2. Lordly_Lobster on

    Kinda looks like oil deposits/old grease. If detergent doesn’t work you could try a citrus based solvent like Goo-Gone. After that if you want them to shine get some Simichrome polish.

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