What type of engine oil should be used at -30 degrees Celsius?

[SadieMarie]

At -30 degrees Celsius, engine oils with grades such as 0W, 5W, 10W, 15W, 20W, and 25W can be used. The smaller the number before the W, the lower the low-temperature viscosity, the better the low-temperature fluidity, and the lower the applicable minimum temperature. Therefore, at -30 degrees Celsius, 5W30 or 5W40 is recommended. Engine oil, also known as motor oil, serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption and cushioning. Engine oil consists of two main components: base oil and additives. The base oil is the primary component of the lubricant, determining its basic properties, while additives compensate for and improve any deficiencies in the base oil's performance, imparting new characteristics and making them an essential part of the lubricant.

[LaAdalynn]

When I used to drive in Alaska at -30°C, I found that 0W-30 full synthetic oil was the most reliable, making the engine run much smoother after startup. The 0W designation means it can flow easily even at -40°C, preventing the oil from thickening and seizing the engine. Compared to the 5W series, 0W is better suited for extreme cold and also reduces mechanical wear during startup. I've tried a certain domestic brand and felt it offered good value for money, but I recommend choosing the matching model according to the car's manual. It's also a good habit to warm up the engine for a short while before winter trips to ensure safe driving—don't wait until engine problems arise to regret it.

[JasperRose]

Choosing engine oil at -30°C is quite simple. I just use 0W-20 or 0W-40 synthetic oils, which have strong antifreeze properties and fast fluidity. Remember, the lower the W number, the better the low-temperature performance. Avoid using high-viscosity mineral oils as they can solidify in cold temperatures, making engine starting difficult. Based on my experience, regular oil changes are crucial—aged oil significantly loses effectiveness. It's advisable to choose reputable brands, but don't overlook your vehicle's original requirements. Check the label or app recommendations.

[MacCharlie]

Below -30°C? Just go for 0W series oil like 0W-30. It ensures quick cold starts and reduces engine wear. Synthetic oil is the basic choice. Don't use the wrong grade, make sure it matches your vehicle's condition. Proper maintenance means fewer problems.