Probably about clay lube dilution. I think the biggest thing is just knocking the crud off so get a pressurized sprayer and that should work well at that dilution.
I'm sure you could, but what I would do then, as not to waste product, is do a quick pressured water rinse then QD to break up the dirt. To wash the big grit away and to presoak a bit would be too costly with using that dilution.