I did in fact use the dawn on my '01 PT cruiser, before i did my first clay and Zaino application. They do not tell you to do it more than once, only for the first time if other wax products have been used. I did that in January of 2001. I traded my PT in late last year and the finish was still flawless. Not sure what is so complicated about using Z2, and following that up with Z6 spray detailer? Since i prefer to do multiple coats on a single day, i use a few drops of ZFX, but that isn't required.
Pat and hammer, thanks for the heads up on the new products. I will stick with Z2 polish, as it has served me well for the last 6 years.
BTW, i have tried most other products on the market. Mothers, Meguirs, Klasse, plus countless other waxes, polishes and snake oil(anyone remember rain dance?). While the big names do a fine job, i have found Zaino to do an equal or better job while be easier to use. Easy to use is important to me, since i am trying to take care of 6 vehicles. The fact that Z2 leaves NO residue and comes off so easily is important to me.
However, for cleaning and preparation of paint that has been neglected, i love the Meguirs products!