What causes the Great Wall Haval H7 to burn engine oil?

[SiennaDella]

Here are the reasons why the Great Wall Haval H7 burns engine oil: 1. Poor oil quality: Using engine oil of inferior quality or with viscosity grades that do not meet requirements. Low-quality engine oil can accelerate wear, and if the oil viscosity is too low or too high, it can lead to poor engine lubrication, increasing wear on piston rings and cylinder walls, reducing sealing performance, and resulting in oil burning. 2. Excessive clearance: Excessive fitting clearance between piston rings and cylinder walls, improper installation of piston rings, or degraded sealing performance can cause oil on the cylinder walls to enter the combustion chamber, leading to oil burning. Additionally, poor sealing performance of valve seals, damage to the crankcase positive ventilation valve (PCV), or clogged crankcase ventilation ports can increase crankcase pressure, causing oil to enter the cylinders along with crankcase gases and participate in combustion. 3. Excessive oil: Overfilling of engine oil can cause oil burning. When the oil level exceeds the midpoint, excessive oil pressure can cause too much oil to splash into the combustion chamber during engine lubrication, leading to combustion.