At what level of engine oil burning does a vehicle require an overhaul?
2 Answers
During normal driving, if a vehicle burns engine oil and emits slight blue smoke, it requires an overhaul. Engine oil burning is caused by wear and aging of piston rings and valve stem seals. Valve stem seals can be replaced without disassembling the engine, but piston rings require engine disassembly for replacement. Therefore, the issue of oil burning cannot be completely resolved without an engine overhaul. Preventive measures to avoid oil burning: 1. Use high-quality engine oil: Premium engine oil provides excellent lubrication, as well as superior cleaning performance and stability. 2. Maintain fuel system cleanliness: Using high-quality fuel additives helps keep the fuel system clean, which is crucial in preventing oil burning. 3. Perform regular vehicle maintenance: Regularly change the engine oil and oil filter.
I've been driving this car for several years. At first, when it started burning oil, I didn't pay much attention to it, just adding a little oil every one or two thousand kilometers. But when the oil consumption exceeds 500 milliliters per thousand kilometers, the problem becomes serious. After inspection, the mechanic said that internal parts like the piston rings were severely worn, causing the oil to be burned. At this point, blue smoke often appears from the exhaust, or the oil light frequently comes on. If not overhauled, the engine may overheat and be scrapped. A major overhaul involves disassembling the engine to replace seals and worn parts, costing at least four or five thousand yuan. For prevention, I've since always changed the oil on time, and using high-quality oil can extend the engine's life and avoid such major troubles. Anyway, when oil burning starts affecting driving safety, timely action is the most hassle-free solution.
