I take a very diffrent aproach to mobil. I don't do it much, but I do it for good clients. I do everything warterless, and make sure there is a power outlet near buy or use my ac outlets I've added to my car. I keep two optima yellow tops in the trunk for power and ahve never run out even donig two cars. I use poor boys S&W. 5 gal palls are the only way to go! Everything else pretty much as normal, clay polish protect. The tools are all the same shop vac, pc, milwaukee rotary, etc.... I think it's much easier and less overhead. I figured hey, I do it on my own car, why not. I barely ever use water anymore.