Yep.I use Meguiar products too not only on my PW Plateau TS but on my 2011 BMW528I.My son and I wax the all-steel Sprinter once a year and it makes it easier to wash too.Also helps protect paint finish. With my WInnebago Aspect I had other problems with black/gray stains and more cleaning BEFORE waxing. Certainly any good product as noted above, including Turtle Wax is good. Do NOT bother using one of those WASH & WAX products.Waste of money.
AL