When is the Best Time to Change Engine Oil in Winter?
2 Answers
Generally, it is recommended to change the engine oil before winter arrives. The specific method may vary depending on the environmental temperature in different regions. If the winter conditions are particularly harsh, it is advisable to use winter-specific engine oil, which can provide better lubrication for the engine and prevent abnormal wear during operation. The oil change intervals are as follows: 1. Time and Mileage: For conventional oil, it should typically be changed every 3-4 months, while full synthetic oil can last 6-9 months. Conventional oil should be replaced every 5,000 kilometers, semi-synthetic oil every 7,500 kilometers, and full synthetic oil every 10,000 kilometers. However, the oil change interval may vary depending on the driving conditions. 2. Long-Distance Vehicles: For vehicles frequently used for long-distance travel, conventional oil should be changed every 5,000 kilometers, semi-synthetic oil every 7,500-10,000 kilometers, and full synthetic oil every 10,000-15,000 kilometers. 3. New Car First Maintenance: The oil change interval for the first maintenance of a new car also varies. Some cars require an oil change within two months or 3,000 kilometers, while others may require it within six months or 7,500 kilometers. The oil for the first maintenance can be changed according to the recommendations of the 4S dealership. During the break-in period, the engine oil tends to accumulate more impurities and should not be used for an extended period.
The optimal time for winter engine oil changes is closely tied to local climate conditions. Living in Northeast China year-round, I always pay special attention to my oil condition by late October. Sudden temperature drops can significantly reduce the fluidity of used oil, especially in vehicles that have traveled 7,000-8,000 kilometers - you can actually hear noticeable dry friction sounds during cold starts. I typically schedule my oil change on the last above-freezing sunny day before winter, while having the mechanic check the oil's freezing point and viscosity. Always choose oil with W ratings like 5W-30 - the smaller the number before W, the better the cold-start protection. Last year I delayed until late November and struggled with -20°C starts that nearly killed my battery. Now I combine oil maintenance with winter tire changes for convenience and safety.
