What is the method for changing car engine oil?
2 Answers
The method for changing car engine oil is: 1. Lift the car and remove the bottom protective plate; 2. Place an oil container under the oil pan and loosen the drain plug; 3. After the oil has completely drained, replace the oil filter and apply a layer of oil around it; 4. Tighten the drain plug, reinstall the protective plate, lower the car, and pour in the new engine oil. The methods for selecting engine oil include: 1. The oil should be clear in appearance with a sulfur content of less than 1%; 2. The weight of residual carbon should be less than 1%; 3. The volume of water and sediment should be less than 0.1%; 4. The weight of ash content should be less than 0.03%.
I've changed the engine oil myself many times and find it quite easy to get started. First, park on level ground and let the engine cool down for safety. Use a jack or ramps to lift the car, exposing the undercarriage. Prepare new oil, a new filter, a wrench, and an old oil drain pan. Locate the drain plug on the oil pan, loosen it with the wrench, and let the old oil drain slowly into the pan—be careful not to burn your hands. While draining, replace the oil filter by unscrewing the old one with a filter wrench, applying a bit of new oil to the new filter's gasket, and reinstalling it. Once the old oil is fully drained, tighten the drain plug and add new oil without exceeding the upper mark on the dipstick. Start the engine for a minute or two to check for leaks. If everything looks good, clean up the area. I change my oil every 5,000 km—it saves money and labor while keeping me informed about my car's condition.
