POR-15 is one of the more popular examples of such a rust-protective sealant, and they even have a rubberized coating to go over it in case you want even more protection underneath your car.

Home mechanics and car ... A rust reformer is a type of undercoat that will ensure rust can't make a comeback where it's ...

She's well known for giving cars DIY makeovers and reviewing popular luxury car features ... sections to wrap perfectly is the trunk area. Because there is so much rust on the back of the trunk ...