At What Temperature Should Winter Engine Oil Be Changed?

1 Answers
Zelda
07/30/25 4:40am
Engine oil should be changed when the temperature is around zero degrees Celsius. After enduring an autumn season, which typically brings strong winds and heavy rainfall, vehicles often suffer significant wear and tear. Performing maintenance and changing the oil before winter sets in is highly beneficial for ensuring the vehicle's safe operation during the colder months. The benefits of changing engine oil: Regular oil changes provide optimal lubrication, cooling, and cleaning for the engine. Precautions for changing engine oil: Avoid changing oil when the engine is cold. In cold conditions, oil viscosity increases due to low temperatures, impairing its flow characteristics. Changing oil under these circumstances may result in incomplete drainage of the old oil. Additionally, it's crucial to add the correct amount of oil—overfilling can increase friction resistance among engine components, reduce engine power, and in severe cases, lead to oil entering the combustion chamber. This can cause oil burning, blue smoke from the exhaust, increased carbon deposits, and even engine knocking or cylinder scoring.
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