The Jabsco Flat Tank Oil Changer System simplifies the engine oil changing process, ideal for changing oil in Boats, RV’s, and Lawn and Garden Equipment. There is no need to worry about open containers causing spills when changing engine oils with the 3.5 gallon (13 liter) self-contained unit fitted with a self-priming diaphragm pump and an easy pour spout for emptying. The Flat Tank design allows for easy storage in deck boxes, storage lockers and RV compartments. It is easy to use with the efficient dipstick suction tube, battery-clamp wire leads and an on/off switch on the pump.