What Causes Engine Oil Leaks in Cars?

1 Answers
DiTeagan
07/28/25 9:36pm
There are many reasons for engine oil leaks in cars. Oil leakage will directly affect the technical performance of the vehicle, leading to waste of lubricating oil and fuel, power consumption, and environmental pollution. The causes of engine oil leaks are as follows: 1. Excessive lubrication oil, high oil level, or using the wrong oil type account for the most significant proportion of car oil leakage causes. 2. Uneven tightening force, looseness, or detachment of various fastening nuts on the vehicle can lead to operational failure. Regular inspections should be conducted to avoid this cause of car oil leakage. 3. Many customers, aiming to save on vehicle costs, may opt for "cheap alternatives" when choosing car parts. However, poor-quality, substandard materials, inferior craftsmanship, and improper structural design of these parts are high-risk factors for car oil leaks. 4. Blocked vent plugs or one-way valves can cause oil leakage at weak sealing points. This type of car oil leakage is relatively technical and difficult to detect on one's own; it requires professional diagnostic tools from a 4S shop to identify. 5. Vehicle aging is also a major cause of oil leaks. Over time, sealing materials can become excessively worn, aged, deteriorated, or deformed, losing their effectiveness.
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