Ok, wash first, then clay...but then do you wash again after the clay treatment or just hose the car down before you wax? (uhm)
Just clayed my car last night.
I used Optimum No Rinse Wash and Wax to clean the paint....then as lubricant to clay. Put a layer of Collinite 845 which is super easy to apply and remove by hand. Smooth as glass paint
I've been meaning to try a sealant though to test longevity. I get a good 5-6 months using Collinite 845 for reference.