Can you rust proof a used car

Rust is a chemical process, and if caught in time, that process can be halted. A new rust spot can be grinded down and retouched so that it is not an issue. Now granted, if a rust spot is allowed to build and grow, there may not be much that can be done.

Still, if caught early, a car can be salvaged and rust can be repaired. One would think with all of the exciting and modern features available on a new car, that rust proofing would be included. We think it does. Some drivers are very careful to keep their cars clean and crack, rust and corrosion free. Undercoating such used cars add a much-needed protective layer for the undercarriage, especially since one can protect their car from rust for only too long.

If your car has already been damaged by rust and corrosion from years-long use on icy roads and endless rounds of rust formation, it can still be saved by undercoating. When done right, undercoating involves an initial clean-up process that rids the undercarriage of any accumulated gunk, rust and dirt. The new clear undercarriage is then primed with a new protective layer of undercoating, paving the way for a fresh start and protecting the areas that were already damaged.

To rustproof or not to rustproof, that is the question. If you bought your car new, once they had you trapped in the finance office, rustproofing was one of the big upsells. A dealer will highly recommend you have your car rustproofed, and I agree with them. One caveat: if you opt for rustproofing, take it to a place that specializes in it.

It may look simple, but one lazy application by a poorly trained technician means your car is vulnerable. Rustproofing has changed over the years, but the concept is basically the same: keep moisture away from metal to prevent corrosion. Depending on your vintage, you might recall a time when people used motor oil as an undercoating. The principle was good but such practice could compromise electrical components of the car as well as be extremely messy. Times have changed and that old oil concept has been replaced with a tar-based spray — undercoating — which effectively forms a hardened barrier to the underneath of your car.

You could choose a dripless oil spray, which forms a hardened wax-type barrier. This covers more area than the tar-based, as holes will be drilled into door panels and other areas so the oil can access more interior regions of the car. If cracks or chips form, this can let in water and hold it there, inviting possible corrosion, though yearly inspections are advised to prevent this. A drip oil spray treatment is used by Krown Rust Control , where I took my car for a hands-on demonstration.

Even something as innocent as a tiny scratch or nick can spell trouble. Keep an eye out for small scratches and treat them before they begin to erode. Also, look for dark spots in the paint, as these are usually symptoms of rusting metal beneath. In that case, get your mechanic to inspect it next time you bring your car in for an oil change.

A thorough cleaning will prep your undercarriage the next step, which is to coat it with a rust-proofing formula. During autumn, before winter has its effect on the roads, clean every inch of your car. Spring is a good time to get it done too. Cars are more vulnerable to rust during spring.

This makes for a perfect storm of rust-forming conditions that you should prepare for. Your first option is to have it oiled with a rust proofing spray.