Is it necessary to change the oil when the Audi A4 prompts for an oil change?

[Felix]

Audi A4 prompts for an oil change should be changed immediately, and the car engine should be checked to confirm the cause of the fault prompt and replace the oil. After eliminating the cause of the fault prompt and replacing the car oil, the prompt for changing the oil will automatically disappear. The following are the related functions of engine oil: Relieving friction and high temperature: A sufficiently thick oil film separates the surfaces of relatively sliding parts, thereby reducing wear. Sealing effect: Engine oil can form a sealing ring between the piston ring and the piston, reducing gas leakage and preventing external pollutants from entering. Anti-rust effect: Lubricating oil can adsorb on the surface of parts to prevent contact with water, air, acidic substances, and harmful gases. Buffering effect: When the pressure at the engine cylinder port rises sharply, suddenly increasing the load on the piston, piston chips, connecting rod, and crankshaft bearings, this load is transmitted through the bearing lubrication, buffering the impact load.