
Oil inspection due can be cleared in the Audi mini system. The following are the specific functions of engine oil: 1. Shock absorption and buffering: 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 and lubricated through the bearings, providing a cushioning effect against the impact load. 2. Rust and corrosion prevention: Lubricating oil can adhere to the surface of parts, preventing contact with water, air, acidic substances, and harmful gases. 3. Lubrication and wear reduction: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear, an oil film needs to be established between the two sliding surfaces. A sufficiently thick oil film separates the relatively sliding surfaces, thereby reducing wear. 4. Cooling: Engine oil can carry heat back to the oil tank and then dissipate it into the air, helping the radiator cool the engine.

I was also confused by this reminder after my last service. Actually, the reset methods vary significantly between different car models. For my Japanese car, you need to press the small knob on the dashboard while the engine is off, turn the key to the ignition position (without starting the engine), and wait for the maintenance light to blink a few times to reset it. German cars are more complicated, requiring you to access the engineering mode through the central control screen. Last month, I helped my neighbor reset his American pickup truck, which actually required simultaneously pressing the brake and accelerator while turning the key—I almost thought it was going to take off! If you really can't figure it out, the easiest way is to ask the mechanic to handle it during your next service, or check the maintenance manual in the glove box—the steps are all clearly written there.


