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Reasons for Fast Engine Oil Consumption in Cars

1 Answers

VonAthena

07/24/25 2:14pm

Here are the reasons for fast engine oil consumption in cars: 1. Wear or damage to piston rings, or changes in the gap angle of piston ring openings, causing large amounts of oil to enter the combustion chamber, leading to oil burning. 2. Severe wear of the cylinder liner can also cause oil to enter the combustion chamber and burn. 3. Excessive oil level in the crankcase, or aging and cracking of oil seals at locations such as the crankshaft, leading to oil leakage. 4. Poor crankcase ventilation, preventing fuel vapor in the crankcase from being expelled, which increases crankcase pressure and causes oil seepage. 5. High engine RPM. Modern engines are designed for high RPM, and excessively high speeds will inevitably increase oil consumption. 6. Different driving environments also affect oil consumption. For example, driving in mountainous areas versus flat terrain, fuel quality, and the driver's skill level can all influence engine oil consumption.

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