[notout86]

Recently I found an old bottle of Turtle Wash'n'Wax i.e simply washing with it is supposed to wax it at the same time. I just diluted it to double the strength with rainwater,in a clean oil collector pan and painted it lightly all over the car with very soft nylon broom. I ensured it had no chance to dry and painted all over again. When I say "paint" I mean NEVER rubbing/pressing. The first coat soaks into & loosens the dirt and the second pass shifts it. Agitate the broom in the solution to let solid dirt drop out.
Still wet, I flooded rainwater onto the highest surfaces downwards to the lowest to wash off the solution and dirt.
Finally I towelled the glass dry.... only the glass.
I must say that I was pleasantly surprised. I allowed the paint to dry on its own and there was no spotting or streaking.

When the paint was dry I was curious to see if the wax had coated the paint so I placed a dry towel on the roof and drew it across under its own weight and indeed the the surface
was slippery as you only get if there is wax present.

Easily the fastest wash ever for me.
I am not sure if having the wax component included with the wash component has anything to do with it but bugs seemed to come off much more easily than usual too.

Water on the paint does not bead like it does after the usual waxing but I have used this method 4 times now and am yet to find a downside.