Does a 10-year-old car burning oil need an overhaul?

[MartinMarie]

Yes. Symptoms of oil burning: Oil burning refers to the engine oil entering the combustion chamber of the engine and participating in combustion along with the air-fuel mixture. If the engine shakes at idle, or the engine oil is severely depleted during a routine maintenance (oil change) cycle (without any leakage), then the vehicle is experiencing oil burning. Oil burning in a vehicle can lead to rapid damage of the oxygen sensor, increased carbon deposits in the combustion chamber, unstable idle, lack of acceleration power, increased fuel consumption, excessive exhaust emissions, and other adverse effects. In severe cases, insufficient engine lubrication can cause irreparable damage or even total engine failure, significantly increasing repair costs and posing potential safety hazards. Causes of oil burning: Incorrect installation or misalignment of piston rings, though this is rare and has a low probability of occurrence; overfilling of engine oil, exceeding the upper limit of the scale; dirty throttle body.