Your car is one of the largest investments you will make. In order to protect the finish and minimize oxidation, which takes a toll on the paint finish, you should keep the exposed areas as clean as possible. Municipalities mix chemicals with the sand and gravel they spread on the streets and highways to increase traction for the general public. Municipal road crews use a chemical called "Magnesium Chloride" to lower the freezing temperature of the snow pack and then they mix these chemicals the with salt, sand, and gravel to promote better traction in bad weather. This mixture, while making the roadways much safer during the snowy season, takes a toll on your cars finish. Extended exposure to this slurry for extended periods, can dull your paints finish and lead to rusting of exposed metal. Much like changing your engine oil promotes extended engine performance, you should remove the salt, grime, and mag chloride from your paint at least once a week during the snowy season to protect the finish.
We invest tens of thousands of dollars on our automobiles, remember how good it felt driving your shiny new car off of the dealer's lot. Everything was clean and brand new, the car performed perfectly, at least for a while. Removing the dirt, road grime, and harmful chemicals once a week will help to keep your car show room fresh and extend the exterior finish and undercarriage as long as possible. You deserve it, and so does your car.
