Yeah for sure, some reviews I saw said fluid film can be used as a rust remover. But if not then ill still do a rust convertor. How long does fluid film last for? Only reason being my dad works for glidden paints and they make a thick, rubberized undercoat that works really well and I can get it fairly cheap. My dad had it on the underbody of his bronco and 5 years after application it still looked good when he sold it. A few spots had worn off but not too bad. As for price point, althoyght tht undercoat may be discounted, fluid film would probably be a ton cheaper.