Ahh, to be of one mind.
Now about DI water. It removes all of the Cations and anions that are found in water. These are the particles that carry an electrical charge. Pure water does not have an electrical charge. What it does is remove all of the metals, etc., that leave deposits on the surface of the car. It does work realy good, but there are a few things that you need to watch out for if you are doing car lots.
1. The cars need to be detailed or very clean to start with. If they are not there will be road grime on them and the DI Water will not remove this surface dirt.
2. You will need to make sure that there are thoroughly rinsed. The dust accumulation on the cars can be more than you realize when you are washing them and it will look like you rinsed it well, but after the water dries there could very well be spots on them.
Now from what I have seen, and from the few car lots that I have done what you need to do is have one guy rinsing with DI water and two using chamois to dry it off. They do not have to be perfectly dry, just the majority of the water needs to be off of the car. They also need to be sure that the chamois are opened up so that they get maximum absorption. If the driers ball the chamois up, and they will want to, they will increase their work a lot. When they run the chamois across the car they need to start at the front and leave the chanois on the car all the way to the back. The sides are not a major concern. They can hit it real quick and that is all that it will need. The water running off of the car and that is sprayed on during the rinse process will take good care of this part of the process. Then they move on to the next car. I have seen them do around 80 cars an hour this way. They definitely do not let any dust settle between cars. I know that there is a guy here that has 4 trucks that this is all that they do, and they do everyone in the Mesa area. They also are cheap, last I heard they were charging around .75 a car. I would not do it that cheap.
Anyway a good source of DI Water is Culligan, Ionics pure Solutions, or Apollo. Apollo actually specializes in car washes, and their is the previous history of Mobile washers that have screwed them that you might have to overcome, but they have a good product.
Just my thoughts.
Scott Stone
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