i use this and purchased direct from the chemical guys importer based in scotland... I will try and dig out the details...
all you do is pre-mix it as you said in a 3 or 5 ltr pressure pump thingy and gently spray it over the car... let it dwell for a few minutes but don't let it dry though
i use it combined as a 50/50 concentration mix traffic film remover and this combination seems to work very well
smells nice too!
