What is the normal amount of engine oil for a car?

[OAutumn]

Generally, the engine oil level should be between the upper limit (MAX) and the lower limit (MIN). The optimal oil level is slightly closer to the upper limit. If the oil level is below the lower limit (MIN), it is abnormal and requires inspection and repair. Effects of insufficient engine oil: When the oil level drops too low, resulting in insufficient oil pressure, it can lead to poor lubrication of the engine's friction surfaces. This may cause abnormal shaking, reduced power, and in severe cases, engine bearing seizure or even stalling, which is dangerous while driving. Engine oil serves as a lubricant. During engine operation, the crankshaft is connected to the connecting rod via bearings (commonly referred to as "bearings"), and the crankshaft itself is mounted on the engine block also through bearings. Additionally, the piston rings and cylinder walls are subject to friction. Without proper lubrication, these components experience dry friction, increasing the friction coefficient and causing severe wear to engine parts. Precautions for changing engine oil: Fully synthetic oil should be changed every 8,000-10,000 kilometers, semi-synthetic oil every 5,000-8,000 kilometers, and mineral oil approximately every 5,000 kilometers. It is essential to change the oil regularly, avoid mixing different types of oil, purchase high-quality fully synthetic oil, clean the engine air filter periodically, and replace the oil filter.