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

my5thmopar said

This is what happens to a nice paint job, when and it will, rust comes back. I’m my case the acid in the epoxy primer was incompatible with the rust killer. I used all body shop supplies from our AkzoNobel supplier. I’ll never use it again on a body panel. I would use it on other surfaces.

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I have mentioned many times that an epoxy primer CAN have a reaction with an acid like Ospho, which is a phosphoric acid solution. A second coat neutralized by water is the answer there. I was first told this by the man at Southern Polyurethanes. I have tried to say on here also, there is also a difference in auto cleaning acids types and "rust convertor".
Just wondering , did you use an acid product to clean the metal or a rust convertor. But like you said, he problem will arise IF there is an acid in the epoxy that reacts to the acid cleaner. Just wondering.