Have used chassis black on a two different frames.One frame was dipped to remove rust,and the other had light rust on it both came out great
We use it on everything works especially well on heavy equipment
This stuff looks really great when it is dried. Has a shiny durable shell that puts it in it's own class compared to the other chassis paints on the market!
I thinks its awesome. Sprayed my new 9 inch rearend with it and it came out great.
HB Chassis Black