What Are the Causes of Oil Burning in Audi Cars?

[AmyFitz]

Here are the reasons for oil burning in Audi cars: 1. Most car manufacturers design their engine crankcases with positive pressure, meaning they appropriately control the exhaust of internal engine gases, maintaining a certain pressure inside the crankcase. However, Audi's engines are designed with negative pressure, creating a vacuum state inside the crankcase during engine operation. Excessive crankcase exhaust gases enter the engine's intake system. While expelling these gases, some atomized engine oil in the crankcase also enters the intake manifold along with the exhaust gases, leading to significant engine oil consumption. This is one of the main reasons for oil burning in Audi cars. 2. Due to the discrepancy between domestic fuel quality and international standards, a large amount of carbon deposits easily forms in the combustion chamber during engine operation. Carbon deposits are the root cause of various engine problems. They accumulate in the piston grooves, causing the piston rings to stick together. This prevents the piston rings from sealing completely, significantly reducing their oil-scraping and sealing capabilities. Additionally, sludge can clog the oil return holes, preventing normal oil return and increasing oil consumption, which leads to the phenomenon of oil burning in Audi cars.