What Are the Main Causes of Engine Oil Burning?
1 Answers
The main causes of engine oil burning are as follows: Carbon deposits: Due to the inconsistency between domestic fuel quality and international standards, a large amount of carbon deposits can easily form in the combustion chamber during engine operation. Carbon deposits are the root cause of various engine problems. Carbon deposits accumulate in the piston grooves, causing the piston rings to stick together, which prevents them from sealing completely. The 'stuck' piston rings significantly reduce the oil sealing capability. Additionally, sludge can clog the oil return holes, preventing the oil from returning normally and leading to increased oil consumption. Carbon deposits also exacerbate the wear between the piston and cylinder wall, creating excessive gaps and allowing oil to enter the combustion chamber. Valve stem seal corrosion and aging: Corrosion and aging of the valve stem seals result in poor sealing. Valve stem seals are among the most prone to aging and wear in the engine. Cars with over 100,000 kilometers of driving typically have this issue. Front and rear crankshaft seal aging: The front and rear crankshaft seals are in extensive and continuous contact with oil. The impurities in the oil and temperature changes within the engine gradually weaken their sealing effectiveness, leading to oil seepage or leakage. Damage to the oil seal between the turbocharger and intake pipe: The main reason for this is excessively long oil change intervals or the use of inferior oil, which results in insufficient lubrication and cooling for the floating turbo main shaft, thereby damaging the oil seal.
