Stop in for a cup of coffee

Well, the 63 Fury roof is in rust mort now and have to wait 24 hours before I can do anything with it. Had to coat the complete roof.
The whole thing was rusty and some pretty deep pits. I used vinegar first then sand blasted then more vinegar again then a wire wheel and now rust mort. Never did this big of an area with so much rust so doing the best I can with it and hope I'm doing it right. :BangHead: :BangHead: :BangHead:

What is rust Mort?