Just pull out the oil pipe through the hole and you can simply extract the engine oil with an oil suction . The liquid pump works by connecting the clamp to the car battery. This high-efficiency fuel pump is the perfect device for quick and clean oil change. It is highly suitable for pumping engine oil, crude oil and heating oil. Regarding installation, you just need to place the water inlet pipe and the water outlet pipe in the appropriate positions, connect the power clip to the car battery and the button. This process is very simple and you can usually complete it by yourself to the normal operation of the engine. 12V Oil Fluid Sump Extractor Scavenge Exchange Transfer Pump Suction Transfer Pump Tubes for Auto Car Boat Motorcycle Engine 12V engine Oil recovery pump sump machine oil extraction and recovery Input Voltage: DC 12V Wattage: 60W Current: 5A Work Sound: 70 dB Maximum Flow Rate: 1.5 L/min name: Fuel transfer pump Colour: Yellow + black Material:Plastic+Metal Package Contents: 1 x Fuel transfer pump 1 x Outlet hose 1 x Inlet hose 2 x Hose clamps Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.