Epoxy primer over Rust converter

You have to prime POR15 with POR's primer in order to get anything else to stick to it. I have the trunk of my Barracuda completely painted with POR15 (after wire brushing the loose surface rust off) primed it with POR's primer then primed it with a filler surfacer before top coating with color. This is the ninth year since I did that and nothing has lifted, flaked or rusted. Inside under the carpet I just coated with POR15 and it's held up for the same number of years.

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