When I get old pans from yard sales etc. Some so dirty you cannot read everything on the bottom. I clean them with oven cleaner then re season with nonstick cooking spray. I have had no problems. I know oven cleaner may not be environment friendly, but neither is driving so we pick our items we use. ... View related article.
I am not having any trouble, but it could be because I use 1 cup of white Vinegar in the wash load and 1 cup in the rinse cycle. So trying this may help. ... View related article.