I purchased a portable water deionizer from Griot's Garage a few weeks ago. I am very impressed. My water in Calgary has 150ppm hardness and the deionizer took it down to 0ppm. I washed three of my vehicles and did not dry them off. It was sunny and I had no spots. I dried the 10 with a shammie and it looked like I just waxed it. The glass is clear and there is no filmy schmeg left on the paint. With three black vehicles, I'm one happy camper!
Check out the link.
http://www.griotsgarage.com/product...ar+cleaning+tools/portable+water+deionizer.do
Check out the link.
http://www.griotsgarage.com/product...ar+cleaning+tools/portable+water+deionizer.do