The oil filter element needs to be drained, because the oil filter element is replaced with the oil:

1. The oil filter element is the oil filter. The function of the oil filter is to filter out debris, colloids and moisture in the oil, and deliver clean oil to each lubricating part;
2. In order to reduce the frictional resistance between the relative moving parts in the engine and reduce the wear of the parts, the oil is continuously transported to the friction surface of each moving part to form a lubricating oil film for lubrication;
3. In order to reduce the frictional resistance between the relative moving parts in the engine and reduce the wear of the parts, the oil is continuously transported to the friction surface of each moving part to form a lubricating oil film for lubrication;
4. If the engine oil enters the lubricating oil circuit directly without being filtered, it will bring the sundries contained in the engine oil to the friction surface of the moving pair, accelerate the wear of the parts, and reduce the service life of the engine.

Oil filter replacement method:
1. Prepare the tools: Dedicated oil filter wrench head, tool for disassembling and disassembling oil filter, tool for disassembling and disassembling oil screw 13 pull wheel wrench, disassembling and disassembling oil screw, T30 outer hex head and 8mm inner angle head. There are two kinds of screws for disassembly and assembly of the engine lower guard, connecting the straight handle, and maintaining the oil and oil filter element;
2. The car needs to be driven for a period of time before changing the oil, that is, if the engine of the car is hot, the oil cap should be opened when the oil is to be drained, so that the oil drains faster under the action of atmospheric pressure;
3. Remove the upper and lower shields of the engine guard; put the screws of the oil; do not rush when disassembling the oil filter element. Slowly, loosen the left and tighten the right. Tighten clockwise, loosen counterclockwise;
4. Use a basin to fill the oil; when installing the new oil filter element, touch it with the new oil to help seal it. When adding the oil, pour 4 liters into it, and pay attention to the oil dipstick. After installation, start the car, step on the gas pedal twice, and check the oil dipstick after a while and then call it a day.