How Long Will a Car Be Scrapped Due to Burning Engine Oil?
2 Answers
Burning engine oil will not cause a car to be scrapped, but it can lead to rapid damage to the engine and oxygen sensors. The reasons for a car burning engine oil are: 1. Faulty design in the crankcase forced ventilation system; 2. Mesh patterns on the cylinder walls. The hazards of burning engine oil include: generating a large amount of carbon deposits and gum, causing the engine to consume more fuel and lose power, possibly leading to difficulty in starting the engine and severe engine wear. The functions of engine oil are: 1. To alleviate friction and high temperatures; 2. To reduce gas leakage and prevent contamination from external pollutants; 3. To prevent contact between water, air, acidic harmful gases, and engine parts; 4. To buffer the pressure rise at the engine cylinder ports; 5. To flush away dirt generated on the working surfaces of parts.
Last time at the workshop, we disassembled an engine with severe oil burning issues. The cylinder wall scratches were as deep as plowed fields. Typically, burning 1 liter of oil every 1,000 kilometers is a danger sign – such cars can last at most half a year. There was a Passat owner who stubbornly drove 8,000 kilometers, resulting in cylinder scoring, knocking, and a major repair costing over 30,000 yuan. The worst scenario is continuing to drive with stuck piston rings – the ground metal particles will clog oil passages, leading to seized crankshaft and complete engine failure. If you see blue smoke from the exhaust pipe, get it checked immediately. Replacing with improved piston rings in time can still save it. My advice: if oil consumption exceeds twice the manual's standard, don't hesitate on repair costs – continuing to drive will absolutely cost you more.
