With the dual pump you can wash the sides and the top of the vehicle at the same time whereas the single pump model has to do sides and then top or vice versa.
With the dual pump you can wash the sides and the top of the vehicle at the same time whereas the single pump model has to do sides and then top or vice versa.
I see - thanks. I didn’t realize that - must be all the videos I have watched have the dual pump because that is how I have always seen the machine operate. I would definitely want that if I were getting that machine.