Hello, I have a 67 mustang which is currently in use. I want to have the car painted in the future. My question concerns protecting metal until then. As an example, I need to replace the trunk seal. There is rust, dirt etc in the gutter which I would like to clean up and have a good surface before attaching the new seal. Will a primer create a sufficient protect for a while. (I dont see the paint job happening for another year or so.