Salt protection?

I use this stuff called Signal Film. The company that makes it sells it to G.E. when they ship locomotives over seas. It is alot like fluid film. I used a round up weed sprayer to put it on. I also had to warm it up and cut it a little with stoddard solvent. When it dries, it turns into a wax type film. I used it on my Jeep 2 years ago and it is still on ! We get about 150 inches of snow a year so the battery acid, ooops I mean salt brine they put down is quite a bit and will destroy a car in a few of years.