[Tennesseestorm]

My 73' Pontiac is a solid southern car- with no rust holes or scale underneath, but it does have several areas of surface rust on the frame, underside trunk floor and gas tank. Floor pans are perfect.

It is not a show car, but more less in "daily driver" condition. I do not want to spend a lot of time or money, but want to be sure my undercarriage is protected from rusting further. The floor pans do not have any rust at all, but parts of the trunk pan and frame have surface rust. Can I just simply paint these areas with some black rust proof paint, or will that make it worse? I really do not want to do any sandblasting or sanding on this car to stop the rust, because like I mentioned, it is not a show car, but I do not want it to rust any more. Would I be better off leaving it alone and not painting?

I never drive it in the rain and it has not been in any salt- at least not for many years. When I wash it, I always spray real good under the undercarriage and wheelwells, so it is clean under there, as far as dirt goes. Being a southern car- it is not undercoated either. Suprisingly, not even any oil or grease under it.

Any advice appreciated.