When is the Best Time to Change to Winter Engine Oil for Cars?

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Information regarding the timing for changing to winter engine oil is as follows: When to change to winter engine oil depends on observing the temperature changes in your region. For example, in Guangzhou, winter temperatures typically start to drop in November, whereas in more northern regions, it may begin to cool as early as September. Therefore, the optimal time to switch to winter engine oil should ultimately be determined based on actual conditions. Additional Information: Whether engine oil needs to be changed depends on two critical factors: mileage and duration of use. Maintenance is required once either threshold is reached. The intervals for oil changes also vary significantly depending on the type of oil used. Mineral oil requires maintenance every 5,000-7,500 kilometers or every six months, semi-synthetic oil every 8,000-10,000 kilometers or annually, and full-synthetic oil every 10,000-15,000 kilometers or annually.