I just tried ONR on a very dirty Honda. I didn't even dust it because the latter had been baked on.
I first sprayed a panel with the ONR to prehydrate the grunge and did the following panel by panel:
First pass with a grout sponge from the ONR bucket. The only pressure was the weight of the dripping sponge. After I wrung out the sponge dropped it in the rinse bucket/grit guard. Wrung in out again and dropped it back in the ONR bucket.
Second pass was with a m/f chenille wash mitt. Just used the weight of the mitt. Not trying to remove bonded contaminants that aren't ready to be removed. Mitt ---> Rinse bucket ----)ONR bucket.
Dried with damp m/f waffle weave and dry m/f cloth.
Tomorrow I will clay with ???? and then a cleaner wax.
This is a first time for a newbie, it worked ok, but nothing to compare it to.
Jeff