I am very impressed with the results after using the water deionizer. I always towel dry my cars, but if it is sunny or windy I have to pull them in the garage because they will be covered in water spots before I can get them dry. We have a lot of solids in our water and your car will be covered in white spots. If it is a hot/sunny day, you won't get the spots off. Today it was sunny, windy, and low humidity, perfect scenario for water spots. I washed the car as normal, ensuring I kept the car wet while I washed it. I then disconnected the hose and let it drain and then hooked up the deionizer. I only turned the water on about halfway and did not use a nozzle. I just let the water gently flow over the entire car, to include the glass and wheels. I then waited a few minutes to start drying the car and dried the sunny side last, which was already dry from the sun and wind. I gave it every opportunity to water spot. When I got done the car was spotless. No water spots anywhere, it even looked more shiny than normal. If this last and continues to give these results it will be money well spent.
