okay I just tried out this Mr. Clean Auto Dry product.
Impressions:
1. soap-- it was good, and it has very good sheeting action. I think there may be soaps out there that are cheaper by volume that does the same job. The dispenser uses alot of soap. The starter kit came with a small bottle, 8 oz I think. I filled the dispenser completely which is plenty of soap needed to wash the car properly. It was warm weather, so I had to switched to soak mode to keep the car wet the whole time, but had to add soap when I needed more. In the end I used about 85% of the soap in the dispenser.
2. The spray was very weak on the final rinse mode. The water was a fine mist that took about 7-10 minutes to thoroughly soak the car, washing out the regular water. This is a disappointment, because I can dry the car in about the same amount of time with better results, using a combination of the california water blade and a couple of large microfiber towel. After the car dried, I saw some slight water spots were the water accumulated at the bottom of the front windshield. I hadn't soaked the winshield enough and I thought. Everywhere else, there was no water spots. Or so I thought. Upon closer inspection, there was some slightly translucent dried spots on my rear windshield. It wasn't white, so I couldn't see it from afar, but looking closer I can see it reflect the sunlight.
Overall the product does what it was supposed to do, but how well depends on how you rinse the car down with the deionized water it produces. And with the current flow rate, it will take a while if you want good results (5-10 minutes). Deionized water and hard water look the same. You have to keep close track of which areas you've soaked. Miss or undersoak even a small area and you'll get those nasty waterspots.
The entire job, including wheels, took about 30 minutes.
I usually spend about an hour doing it the old way but it's also more thorough, since I also use a spray wax detailer (Wax-As-U-Dry) after drying the car. That means I wipe the car down three times, once to dry, once to apply was as you dry, and once for the final buffing. Alot of work, yes, but the best results, absolutely no spots and its smooth to the touch.
Still, I think Mr. Clean Auto Dry is a good product because it achieves 90% of my "regular job" in half the time.
I'll post a long-term review after a few months of using this thing...