We use "Salt-Away" to wash our trucks. I plow for Idaho Dept. of Transportation. The brine and salt we use is NaCl -- very corrosive, but easy to rinse off. The Salt-Away comes with a spray applicator and actually foams when in contact with the salt. It will burn you so be careful (there is salt in your skin).
I used the stuff when ocean boating back east and it kept my boat trailer in great shape. Flushed out the outboard too -- never had any corrosion issues. Vehicles are best sprayed with it on a regular basis during the winter season.
