Is 5W30 Engine Oil Suitable for -35°C in Northeast China?

[ErinMarie]

Using 5W30 engine oil at -35°C in Northeast China is not advisable because the 5W30 grade oil is designed for a minimum temperature of -30°C, which cannot meet the current environmental conditions. Issues with insufficient grade: If you continue to use 5W30 oil at -35°C in Northeast China, you may experience difficulties starting the engine, or the oil may freeze, making it impossible to start the engine at all. Recommended oil for -35°C: For such low temperatures, it is necessary to use a high-quality full synthetic oil with an API SN rating; the SAE low-temperature fluidity should be 0W, and the high-temperature viscosity (either 20, 30, or 40) should comply with the high-temperature viscosity grade specified in the vehicle's manual.