Which Engine Oils Are Suitable for Winter Use in Cars?
2 Answers
For winter use in cars, engine oils with grades such as 0W, 5W, 10W, 15W, 20W, and 25W are more appropriate. The symbol W stands for winter, and the smaller the number before W, the lower the viscosity at low temperatures, the better the low-temperature fluidity, and the lower the applicable minimum temperature. The larger the number after W, the higher the viscosity, ensuring more stable protection at high temperatures. Engine oil serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption and cushioning. Engine oil consists of two parts: base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while additives compensate for and improve the deficiencies of the base oil, imparting certain new properties, making them an important part of the lubricant.
The first number in the oil grade is the most important factor when choosing oil for winter. As an experienced driver with over 20 years behind the wheel, I know best that in northern regions where temperatures drop below -20°C, you should use oil starting with 0W, such as 0W-20. The smaller this number, the better the low-temperature fluidity, ensuring proper lubrication as soon as the cold engine starts. For new cars, I recommend using full synthetic oil—it protects the engine and saves fuel. For older cars over ten years, 5W-30 semi-synthetic oil is more economical. Last month, I switched to Shell 0W-40, and even at -18°C in the morning, starting the car was effortless. Remember not to use high-viscosity summer oil in winter, as it can freeze and damage the engine. Regularly check the oil dipstick, as consumption increases faster in cold weather.
