Abstract: A self-help oil changing apparatus includes a nozzle having an outer tube in which an oil suction tube and an oil filling tube are received. Each of the oil suction tube and the oil filling tube has an end extending out of an insertion end of the outer tube. A clean oil tank and a dirty oil tank are respectively in communication with the other ends of the oil filling tube and the oil suction tube. An oil pressure control module includes a dirty oil pump and a clean oil pump. The dirty oil pump is connected to the oil suction tube and is in communication with the dirty oil tank. The clean oil pump is in communication with the oil filling tube and the clean oil tank. A control unit is electrically connected to and controls operations of the dirty oil pump and the clean oil pump.

Abstract: A self-help oil changing apparatus includes a nozzle having an outer tube in which an oil suction tube and an oil filling tube are received. Each of the oil suction tube and the oil filling tube has an end extending out of an insertion end of the outer tube. A clean oil tank and a dirty oil tank are respectively in communication with the other ends of the oil filling tube and the oil suction tube. An oil pressure control module includes a dirty oil pump and a clean oil pump. The dirty oil pump is connected to the oil suction tube and is in communication with the dirty oil tank. The clean oil pump is in communication with the oil filling tube and the clean oil tank. A control unit is electrically connected to and controls operations of the dirty oil pump and the clean oil pump.