I was thinking about this product dilema some more and realized that #62 is paintable. So it really couldn't leave any wax behind on the paint. Anything it leaves behind would have to be safe for paint shop use. So I sent an email to my local Meg's distributor for some clarification. He gave me some good info on the Final Detail too, which prompted me to get it. I was referred to him from Meguiar's customer care when they couldn't help me with an unrelated question. Anyway, here is what he had to say about the products, and it seems to make sense:
The main difference between 00 and 62 is that 62 is considered a wash and conditioner together which means it has the ability to leave the finish a little slicker and add more gloss. It says paintable because it can be used without fear of contamination in a paint shop environment. 00 is also paintable but is best used for washing freshly painted cars due to the fact it is a very gentle wash product and will not be too aggressive for fresh paints. It is also used as an additive for water in a wet sanding process to add lubrication to the water. I used to use nothing but 62 until we came out with our Detailer line. Then I switched to our "Car Wash Soap" D-21. It should be less than 62 and will produce lot's of suds if that is what you prefer.
When comparing products above to Gold Class Wash it is hard since it is mostly a consumer formulation and designed to be sold through mass retail chains.
So it doesn't sound like #62 is a replacement for #00, but perhaps it is better suited to washing dirty cars whereas #00 seems more suited towards washing fairly clean, pampered cars... :nixweiss
I have found #00 to be up to the task of winter salt, though, but I use about 1.5-2 oz. per wash (with about 1.5-2 gallons of water). So I think I might try out #62 just for the size savings over #00 (1 gallons worth of #00 is about $50).
