Krylon Rust Barrier, Flat Black

I use rust barrier on all my truck frames. I wire wheel all the loose stuff and then apply rust barrier with 1 to 2 coats and it looks like a new frame. 1 coats then I apply the undercoating or paint and sometimes I only use rust barrier. But I recommend Rust barrier for all automotive painting. I even thin it down and use as a primer and it seems to last for ever. Great Product