I've read some people mixing equal amounts of Meguiars Gold Class Shampoo and Meguiars Nxt Wash in their wash bucket. If I understood it correctly, the reason for the mixture is so that they could get the lubricity provided by the Gold Class and the water softening feature of the Nxt.
I got curious. Do you really get the best of both worlds, so to speak, when you mix different types of car wash/shampoo?
jonjon, doubt it... but like any fanatic (I was a certified one), you'll be able to subjectively justify any silly theories anyway... No harm naman other than wasting money.