I have a large grill guard that was quite rusty and pitted. I tried rust converter but the rust came back pretty quickly. This time I removed it from the truck and sand blasted all the loose powder coat and rust off. I didn’t completely sand blast it bare as that would have taken a lot of sand. What should I use to seal the porous metal (and probably a tiny bit of rust) to make sure the rust doesn’t come back through. I haven’t decided if I will top coat with bed liner or hammertone paint. I’m leaning towards the hammertone. Thanks
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