[johnlew]

I use a touchless wash all winter, detail the car in spring and have no problems. After the touchless wash, I dry off excess water and dirt with a damp cotton terry towel at home in the garage and then give it a once over with the Calif. duster. Stays very presentable all winter. I always wash it as soon as it gets dirty and the streets are dry enough in winter so it's never horribly caked and baked on dirt and salt.