Do I Need to Change to Antifreeze Engine Oil in Winter?

[RowanLynn]

It is necessary to change to antifreeze engine oil in winter. Antifreeze engine oil has lower viscosity, which can protect the engine during the winter season. How to identify antifreeze engine oil models: The number before 'W' represents the low-temperature freezing point. The smaller the number, the better the oil's fluidity at low temperatures, indicating it is suitable for lower environmental temperatures. The number after 'W' represents the oil's viscosity at 100 degrees Celsius. The larger the number, the higher the oil's viscosity, meaning the oil can better adhere to the engine cylinder at high temperatures, providing superior protection. Differences between antifreeze engine oil and regular engine oil: Different functions: Regular engine oil functions to reduce vibration, cushion impacts, and minimize wear. Antifreeze engine oil ensures continuous protection for the vehicle during winter. Different temperature suitability: Regular engine oil is suitable for use above zero degrees, while antifreeze engine oil is suitable for use below zero degrees.

[LeLaila]

In winter, many people ask me if they need to change their engine oil for antifreeze purposes. Actually, engine oil itself isn’t antifreeze, but its viscosity matters in low temperatures. The oil bottle has a rating like 5W-30, where "W" stands for winter, meaning it flows more smoothly when cold. In extremely cold regions, if your current oil is high-viscosity (e.g., 15W-40), cold starts will be harder, increasing engine friction and potentially damaging internal parts. I always advise car owners to check their manual and oil grade first—not all vehicles need a change. But if winter temperatures frequently drop below zero, it’s best to switch to a lower-viscosity oil before the season hits. Also, don’t forget to check the antifreeze level to prevent engine freezing. Simply put, an oil change doesn’t cost much, and preventive maintenance avoids cold-weather hassles.

[Lindsay]

The most annoying thing about driving in winter is the car not starting in the morning, and engine oil is crucial. I used to use high-viscosity oil, and as soon as winter came, the engine would struggle to start with a chugging sound. It wasn't until a friend reminded me that I switched to 5W oil. The term 'antifreeze oil' is a misconception—engine oil prevents sludge but doesn't prevent freezing, though it needs to be thinner at low temperatures for better flow. Those in the south might not need to bother, but in the north with heavy snowfall, it's worth switching. Otherwise, the battery bears a heavy load and might fail. I make it a habit to service my car before winter each year: take the time to change the oil and test the cooling system while at it. Keeping the car running smoothly in the cold isn't expensive—just a few dozen bucks—and saves you from freezing on the roadside waiting for rescue.

[MacBrooklyn]

Whether to change engine oil in winter depends on your location. I live in a small town, so I save money by not changing it if there's no heavy snow. However, if the oil is too thick, it can make cold starts difficult and potentially damage the engine, leading to costly repairs—more trouble than it's worth. Engine oil doesn't prevent freezing, but a lower W rating like 0W allows for faster pumping, saving electricity. The cost of an oil change is under 200 yuan, much cheaper than engine repairs, so I recommend checking the oil rating. It's best to change the oil for older cars or those parked outdoors year-round. By the way, antifreeze is the main player in preventing freezing—check its protection level and don't overlook this small detail.