Undercoat?

[Vervepipes]

Rust proofing on a brand new car can be great depending on where you live, as people have said. Beware of trying to add it later (period of years I mean)though because adding the undercoat on top of improperly treated surface, for example dirty, oily or rusted, will make it not adhere well and the rust can get worse. Vervepipes= Seen it happen

Edit: hehe, forgot I was in "search", not "new posts", oh well, re-hashed from the grave it is!