I have never used a rinse-less car wash system before, so I do not have much in terms of comparison - but this will serve as a stand-alone review of this car wash system. I live in an apartment, so I could not use any of the shampoos that require a hose pipe with several gallons of water. The drive-by car washes make me very uncomfortable since I do not know what detergent and brushes are used, and whether they could marr the paint. While I reside in North California and do not have to worry about snow & cold temperatures, a rinseless wash could be used in such conditions too.
The Rinse-less car washes are perfect for these kind of situations - you need very little water - under 2 gallons to wash a typical sedan. These systems are not suitable for very filthy dirty cars, but they are perfect if your car has some dirt and you want to wash it regularly. Additionally, the polymers in ONR adds shine to the car. I bought this from DetailedImage.com, and highly recommend this site. (Disclaimer: Links are affiliate links)
Without further ado, here is the review of ONR 2012 Formula on a dirty black Nissan Altima.
2 Buckets (1 with clear fresh water, 1 with 1 oz ONR solution mixed in 2 gallons of water), pre-mixed ONR solution for pre-rinsing (1 oz mixed in 32 oz of water), Grout Sponge (bought from Home Depot), and Microfiber Towels.
Several water marks, bird bombs, pollen, dust, etc on this 2012 Nissan Altima
ONR feels quite slick on the surface. I pre-rinse the panel that I am about to wash by spraying some ONR+water solution, then use the grout sponge to wash in straight lines. Once done, I rinse the sponge, and go over the panel a second time using the other side of the sponge. Finally, I use a Microfiber towel to dry the panel. If there is some water left behind, I use another microfiber towel to go dry again. You can see the process in the video below.
It's always best to go from the top-most part and work your way lower as you clean the car. I divided the car into several "panels" to effectively wash it. First, I did one half of the top, then the other half. Then I finished all the windows, followed by the hood, front bumper, trunk, door panels, and the remaining lower panels. Finally, I finished with the door jams. I did not do the tires - will leave that for next week.
The sponge did have some dirt it picked up, but that did not affect the slickness, nor caused any marring.
ONR cleans really well. In fact, the car as clean as when I bought it new, if not more.