What Causes Poor Engine Performance in Extremely Cold Regions for Cars?

[BellaLynn]

Poor engine performance in extremely cold regions is primarily due to the lower oxygen content in the air, which can lead to a lack of power during engine operation. Additionally, the low temperatures in these areas cause the engine oil to become more viscous, increasing the engine's operational resistance. When driving in extremely cold regions, it is essential to use engine oil specifically designed for such conditions. Engine oil serves multiple functions in an engine, including lubrication, cleaning, sealing, buffering, heat dissipation, and rust prevention. Common engine oil grades include 0W30, 5W40, 0W20, and 5W30. The letter 'W' in the oil grade stands for 'Winter,' and the number preceding it indicates the oil's low-temperature flow performance. For instance, 0W oil can flow normally at temperatures as low as -35 degrees Celsius, while 5W oil can flow normally at -30 degrees Celsius.