What are the hazards of long-term engine oil burning?

2 Answers
ClaireLee
07/24/25 1:12pm
Hazards of long-term engine oil burning: 1. It will lead to increased carbon deposits inside the engine and damage the three-way catalytic converter of the car engine. 2. It affects the fuel consumption and power output of the engine. 3. If carbon deposits are in the combustion chamber, they will also increase the compression ratio of the combustion chamber, causing engine knocking. The following are solutions for engine oil burning: 1. For old vehicles, the piston seals may have aged, leading to reduced cylinder sealing. Using higher viscosity oil can improve sealing. 2. Oil burning caused by carbon deposits, piston ring blockage, or seal aging can only be resolved by disassembly, replacement, or major repairs. 3. Overfilling oil can also cause oil burning; excess oil can be extracted using tools like a syringe.
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SanMiles
08/11/25 7:16am
Long-term oil burning poses significant hazards. Insufficient lubrication due to reduced oil levels increases friction between piston rings and cylinder walls, accelerating wear and tear. Over time, this leads to louder engine noise and decreased power output. Carbon deposits accumulate in the combustion chamber, clogging fuel injectors and spark plugs, resulting in higher fuel consumption and increased pollutant emissions. The catalytic converter often gets clogged and damaged by oil components, and its replacement is extremely expensive. From my experience, neglecting this issue can quickly lead to engine failure, with repair costs running into tens of thousands. Therefore, it's essential to regularly check the oil dipstick and top up when needed to avoid major breakdowns and prevent being stranded on the road.
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