Anybody using 12 volt marine wash down pumps to hose down and rinse off cars? If so, pros and cons and what type. Might be one of the answers to space, weight. The ones I've located weigh around 5lbs and pump 2 - 5 gpm at the pump itself at city water pressure (45lbs) and can draw water from up to 10 feet. The size is 5 in by 10 in. Considering the pumps are made to pump corrosive saltwater they should last a long time. Price for most $150.00 - $350.00 depending om gpm and if it is a commercial duty pump or not.