Rust Converter Recommendations. Aerosol for sun faded/surface rust car.

Ospho basically turns rust into iron phosphate. It works well. Can be sprayed, poured, brushed, rolled..

But it will only work on actual surface rust. If it's thick or crusty then it won't work great. Any heavy rust needs to be etched, blasted or scraped away. If it's "tight" to the metal, then ospho is the stuff to use.

Epoxy paint over that and it'll be as good as it can be without acid dipping or blasting the whole Chassis.