Tom, I read your post and I cringed a little. While I do not have a solution for you at this time I will share some of my thoughts about water and our cars. As you can see I own a handful of old cars. I never wash any of my old cars with a hose (running water) much less drive them in the rain. Water gets in all the nooks and crannies (Pantera has many of these) and it begins its damaging work. The 73 Bora has never been washed with a hose since 1977. No matter how hard you try to keep it clean water will eventually begin bubbles in the paint.
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