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HELP!! tin baking pan black after dishwasher cycle

I'm sorry if there is a recient thread like this, but I'm new. I'm at my wits end. I have a tin pan that was my mother's when I was growing up. It's been through the dishwasher countless times. This time I used the new Cascade 3 in 1 packets and it turned black. I tried to clean it but to no avail. When I clean it with a little soap and water it turns the water black. I don't want this black in my food, but I don't want to throw it away if there is a way to save it.

I cleaned it with Dawn, soaked it in bleach water (I never used bleach on it and hated to do so now), scrubbed it with a green scotch bright pad, and even tried to clean it with brillo. I know brillo can scratch it, but it's got it's share of scratches as it's maybe 50 years old or more. My mom use to use it when I was a kid and I'm 46 now, so I'd say well over 50 years.

Please help. I'm not even sure they make backing pans like this any more. It's never rusted. It's made one piece not the folded corners that are in the store today. I've bought tin cookie sheets and they lasted about 10 years before producing a black layer that came off in the oil when I greased the sheets. Needless to say they went in the trash. I don't want to have to do the same with this.

Let me know if you need any other details.

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  1. I hear the frustration and just wish I had a solution for you. Unfortunately I don't. But hopefully someone will have an idea.

    I have a friend that whenever I loan cookie sheets to they come back all grey and I'm convinced it is her detergent too. Unfortunately I've never been able to reverse the coloring.

    1. Read like a bad oxidation.

      Try soak the pan in warm Bar Keeper's Friend solution for a 10 minutes+ and clean it with a nylon scrubbing brush.

      1. If it is oxidation maybe it can be buffed out.

        1. Sorry I'm of no help here. The instructions on the pans that I have specifically says no DW allowed.

          I'm curious when you said you've put yours into the DW countless times. What detergent were you using? I may start putting mine into the DW then!!

          1. Yeah, today's DW detergents are pretty harsh. They'll strip the anodized layer right off Calphalon, too.

            Sounds like the tin itself is actually completely gone and you're looking at the base metal. You may need to have the pan re-tinned, which is what you usually had to do periodically in the old days when everyone used tinned copper as well.