You know, I was just on google and found that stuff. I used to use it years ago on cast iron, I was fairly new at this then and didn't know, just did as told? Ya know?
Anyway It's a little pricey but if it works I think they'll pay for it.
a little bit goes a long way don't think that the tape needs a bath in the stuff also tap magic is harmfull stuff to both you and the world I will not use tap magic if it can stain alum. it's strong stuff