Originally Posted by KneeGrinder
You could stop by a body shop and ask them for the phone # to the supplier that stops at their shop once or twice a month, and get a price for their generic spray wash or spray wax, which ever your looking for. I have used many different suppliers, none ever scratched any "Fresh" paint, or very dirty painted surface either, also used it with clay bar too. But your probably going to have to buy a minimum of a gallon. I have never used any commercial retail available detail sprays, I don't think they existed before they were available on the detail supply trucks that supply shops.
Meguiar's red bottle QD has been around forever.
If you want a commercial product, it's hard to beat Majestic Solutions Spray Shine at $20/gallon.