I'll let you guys know my set-up. I have a single 5/8 hose going into a 4-way splitter. From the splitter, I have one hose that goes into the WorldChem unit, one into the CR Spotless system, and one that goes into my pressure washer that has a splitter on it. The outlet hose from the CR Spotless system goes into the splitter in the pressure washer also. From the WorldChem unit I have a 3/4" 50' hose that's on it's own seperate reel that the multi function sprayer is attached. I have Stoner Presoak Soap in the 5 gallon container in one inlet and the Stoner High Pressure Soap in the other. (Stoner informed me that I didn't need a "foaming soap" because the set-up I had would make that unneccesary). When I wash a vehicle , I set the lever to the left (presoak) and foam the vehicle. I than pressure wash and move the lever to the right (High Pressure Soap) and fill a 5 gallon bucket with the foam. I wash the vehicle with a boar hair brush and rinse with the pressure washer. I then do a final spotfree rinse with the CR sytem by turning the valve off at the 4-way splitter to the Pressure washer and by turning on the water to the CR system. I get perfect results everytime. If the vehicle being washed isn't that dirty, I'll omit the brushing stage and just do the presoak followed by a rinse, followed by a spotfree rinse. This system has saved me countless hours over the coarse of detailing cars, trucks, boats, and my personal vehicles.