What is the model number of all-season engine oil suitable for northern regions?
3 Answers
Northern all-season engine oil generally adopts the 10W40 specification, as most automotive lubricants nowadays are designed for year-round use. Engine oil, also known as motor lubricant, performs multiple functions including lubrication, wear reduction, auxiliary cooling, sealing against leaks, rust and corrosion prevention, as well as shock absorption - earning it the nickname "automotive blood". Oil specifications are categorized into summer, winter, and all-season types. Winter-grade oils are labeled 0W, 5W, 10W, 15W, 20W, and 25W, where "W" stands for Winter. A lower number preceding the W indicates lower viscosity at cold temperatures, better low-temperature fluidity, and suitability for colder minimum temperatures.
I've been driving in the Northeast for years and have gained some insights into engine oil selection. In the North, where winters are cold and summers hot, a multi-grade oil like 5W-30 is the top choice for all seasons, as its viscosity perfectly suits all temperatures. It ensures quick starts in low temperatures—even on -25°C mornings, the engine fires right up—and doesn’t thin out in high heat, protecting the engine from rust. Always check your car’s manual, as different models may recommend 0W-20 or 5W-40; for example, my SUV suggests the former, but in most cases, 5W-30 is worry-free and cost-effective. I also regularly check the dipstick to ensure the oil level stays in the middle, avoiding leaks or excessive consumption. My oil change interval is kept between 5,000 to 8,000 kilometers, and synthetic oil is preferable—though slightly more expensive, it reduces engine wear. Choosing the wrong oil not only makes winter starts difficult but also damages the engine in the long run, which isn’t worth it. In short, pick oil based on your local climate, and don’t skimp by buying subpar products.
When helping a friend with car maintenance, I found that in northern regions, all-season oil like 5W-30 is ideal as it covers a temperature range from -30°C to 40°C, offering great adaptability. When selecting oil, pay attention to viscosity ratings—for instance, 5W indicates good low-temperature fluidity, while 30 represents sufficient high-temperature protection. I recommend first checking your car's manual for the specified oil type and then purchasing a reliable brand. Personally, I suggest changing the oil every six months or 5,000 kilometers, while also checking if the oil level meets the standard—top it up if it falls below the minimum mark. This helps reduce fuel consumption, improve performance, and prevent engine issues. Don’t overlook signs of oil leaks, as small problems can escalate into major ones. Overall, this approach is both safe and economical.
