Wash/wax products?

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The paint guys I talked with in GM plants say give it one week at the most, and sitting in a lot, shipping and then at the dealer gives you a week.
Zaino is great, only thing I use on Vettes, easy on/easy off (and yes, it is a one-step process now). Another great thing of Zaino is you can apply multiple coats without taking off the previous coat. Very expensive, and normally only mail order from Zaino Brothers.
Lasts a long time, and repels bugs and other road garbage.
I use NXT on my Jeep and it is easy on/off and smells great. Seems to last and repel almost as well as Zaino, but a lot less expensive and a heck of a lot easier to obtain. (I will be using NXT on the H3.)
Dishwashing soap is ok for the new modern clear coat finishes, but it will remove all wax and or synthetic polymers (such as Zaino) applied by you or someone else, but it will not hurt the newer paints.
In fact, Zaino recommends using Dawn liquid prior to applying the first coat of Zaino, the Dawn removes any possible wax from a previous owner or the dealer, removes road tar and grim. Once a year I have always used Dawn on my Vettes, then a clay bar, then three coats of Zaino.