Product review (3 stars): A new washer would cost ton's more and this Maytag seems like it's going to last a long time
I  used this on a badly rusted bottom rack and lightly rusted top rack, two coats - a day apart. In preparation, we Dremel'd all the rust off each spot.
After about a year, possibly less, the rusted areas were back along with the silverware damage. So, I finally paid $150 for a new bottom rack. and "repaired" the few spots similarly with ReRack on the top rack. At least I get a time of reprieve before replace the other rack, if it's still available! It IS an older Maytag.  A new washer would cost ton's more and this Maytag seems like it's going to last a long time.