24 Jul 12V Hydraulic Pumping Unit Oil Pump/Pumping Pump/Self Changing Oil 5L/Min 60W
12V Pumping Unit Hydraulic Oil Pump/Pumping Pump/Self Changing Oil 5L/Min 60W. After oil pumping, remove the tube, and then run the pump for a while, pump the remaining oil inside the pumping clean, or pump water for a while until the pump head gets clean....