This one I bought through my dealer when I bought my truck. Dealer got it from one of our local rustproofing businesses. I'm not sure of the name. Previous one was a "rust evader". They are not on the market any more.Been meaning to ask...where did you get your Electronic Rust Proofing?
Alaska breaks their DOT contracts up by area and some of the roads up here have salt, some sand and some rocks/p gravel. Some mix all three.