That’s a negative ghost rider. It’s a novel idea, how ever it would be the most expensive prewash ever.… I don’t even want to think about how much of it would waste, which makes my wallet cry.
Yeah it is a great waterless but would never use for that even if possible. Better options out there for foaming.
Mixing 1:20 or even trying to stretch it would cost an arm and a leg. You can get a good pre foam for the same price as the 169oz’s
Bilt Hamber Auto foam and Griots Foaming surface wash are my fave pre wash and work well too. You gotta order BHAF from across the pond. But you can get the griots from Autopia.