Okay all you washer restorers, I have a question for you. I am going to be restoring my Maytag Suds Saver this weekend and I was wondering, what is the blue stuff, and the black stuff I see you put in area of rust and/or in need of water proofing? I think it's called Por-15? Is that right? Where can I buy the stuff? Where exactly can it be used? In tubs? Just on the base? Where do I buy it? Thanks a lot!!!!!