I have an older Suburban that still has a strong engine, but being eaten out in the rear. Quarters mainly. If I buy a gallon of Bondo, what is the best way to fill it in before applying a good dose of Bondo. I actually riveted tin to it last year, now that is even failing. Don't really want the expense of replacing both qtrs.
make sure you cutout all the rusted area. Did my truck and ended up with a hole 2 times the size of the rusted area I saw from the out side. Used sheet metal and rivets under it. was 4 years ago. also left a drain hole as area was getting water inside some how.