GROCO - G-3 Series Oil Change System - 3-Port - 12V - G-3 12VGROCO G 3 Series Oil Change System 3 Port 12V G 3 12V At the heart of the GROCO U LUBE System is a powerful gear pump that delivers an honest 3 plus GPM. All models have dry run protection, touchpad control, a plumbing schematic to tell you what hose goes where, and a handy maintenance log. Models are offered with 3, 4, 5 or 6 valves to connect all of the devices you want to service. A complete assortment of oil pan adaptors, related fittings and