How to protect vintage sink finish?

1cs1267
by 1cs1267

I have a vintage porcelain coated cast iron kitchen sink. The finish/porcelain is in really tremendous shape/condition considering its age. Is there something I should/can use on it to help protect it? I plan on putting mats in the bottom of the bowls to keep pots/pans from scratching the finish, but I was wondering if there was a protectant overall ...


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