I wish I had some of my cars oiled in the past, now I get to deal with rusty bolts and lines, not to mention rust scale on the frame. My new beater will be at Schmidts soon. My '83 Honda was coated by the P.O, spent it’s whole life in Buffalo and is just finally getting to the point where it needs 2 patches welded. The rest of the underbody is perfect, and all of the bolts come off easy. Nothing is 100% guaranteed, but it’s better than just leaving it, or waiting in line for a full car wash everytime the temps are above freezing.