Later on I am sure the detail experts will chime in about all the special products that are most appropriate for clay lube. I have always just used car wash soap diluted with water at approximately a 1:12 ratio. I don't have any problems that some claim regarding clay bar breakdown and I don't have any problems with paint micro marring. But, my last few Chrysler products have always seemed to have very tough paint (if they could just get everything/anything else right). I have never had to do any paint correction like so many seem to do here (knock on wood,
Another difference here in Michigan is that we have copious amounts of water to waste, so we can use hundreds of gallons of water for the wash-rinse-clay-rinse cycles. Maybe the specialty products work better in arid regions.
I do my glass also and it seems to work well. I'm off my podium now.
Michigan has its faults, but I do appreciate the abundance of H2O.
Google "clay lube substitute" for lots of discussions.