Once more I’m trying to paint the cowl vent a bear bent in 2000 (so much that the ends touched). I’ve painted it at least 3 times over the years, but the paint keeps on cracking, down to the bare metal, so it rusts. I tried Flex Seal last time: no luck.
I saw a video of a professional promoting a paint additive that made auto paint flexible, but I could find it only in large quantities. I’m going to try liquid paint this time. Is there an additive that would help? Is that Plasti-dip stuff good for this?