ZAINO Z7 AND Mr. Clean AutoDry Carwash Pro-Series

I have heard SO many HUGE positive things being said about the "Mr. Clean AutoDry Carwash Pro-Series" and i'm a bit confused.. Especially when it comes to Zaino.

The system (the filter) helps to prevent water spots and dries the car completely without you needing to do anything, correct? Now is this ALL because of the FILTER? Or does the soap that comes with it need to be used also?

I use ZAINO and obviously to wash it I use Zaino Z7 wash. Which of the following does that mean?

1. Don't need z7 anymore and just use the autodry soap. (So you just Rinse, Autodry soap, rinse, walk away.. no zaino z7 anymore needed).
2. Don't need the Auto dry WASH, wash rinse car with "unit", followed by regular Zaino Z7, and then use the rinse on the "unit" to rinse Z7 off. The filtered water will result in the car COMPLETELY drying itself without any water spots.
3. NEED BOTH "unit" AND the soap to produce the ability for it to completely dry the car itself without any water spots, but because you use Zaino, that I need to rinse, use Z7 wash, then (rinse again? to remove zaino wash), then unit to "wash" with autodry soap, and then rinse with unit making the LAST soap on the car the Autodry soap?

Thanks

The Mr Clean system is ok at best, most people just use the filter for the final rinse, the filter will last the longest this way. If you have bad water where you live you may want to try the CR Spotless system, it works real well.

http://crspotless.com/