What is the proper oil level position?

[VanFrank]

Engine oil should be maintained between the min and max marks on the dipstick. Overfilling engine oil may cause it to enter the combustion chamber during driving, leading to increased carbon deposits in the combustion chamber. This raises piston movement resistance and reduces engine power. The functions of engine oil are: 1. To alleviate friction and high temperatures; 2. To reduce gas leakage and prevent external contaminants; 3. To prevent contact between water, air, acidic harmful gases and engine components. The oil change procedure is: 1. Lift the vehicle and remove the underbody protection panel; 2. Place an oil container under the oil pan and loosen the drain plug; 3. After draining the oil, replace the oil filter and apply a layer of oil around it; 4. Tighten the drain plug, reinstall the protection panel, lower the vehicle, and pour in the new engine oil.