Can 15w40 Engine Oil Be Used in Winter?
1 Answers
Whether 15w40 engine oil can be used in winter depends on the temperature conditions of the local winter and summer seasons. The specific judgment method for whether 15w40 engine oil can be used in winter is as follows: 1. 15W40 engine oil is suitable for use in temperatures above -20℃. Since engine oil has a certain freezing point and viscosity, i.e., an applicable temperature range, and the winter temperatures vary significantly between regions such as northern and southern China, the usability of 15W40 engine oil depends on the local winter and summer temperature conditions. 2. 15w40 engine oil can be used in southern regions during winter, but it is not suitable in northern areas like Harbin where temperatures are much lower. 3. The meaning of 15W40: The number before the W indicates the low-temperature fluidity of the engine oil, or the minimum applicable temperature. The smaller the number, the better the low-temperature fluidity and the lower the applicable minimum temperature. 15 indicates that the minimum applicable temperature is -20℃, and its low-temperature fluidity is relatively average. 40 represents the viscosity value of the engine oil, which is a relatively high-viscosity oil with good high-temperature protection performance.