Can 0w40 engine oil be used in summer?

[McLeah]

0w40 is an all-season engine oil and can be used in summer. For 0W40 engine oil, the number after W is 40, which refers to the viscosity of the oil at 100°C, indicating that 0W40 oil has higher viscosity at high temperatures, providing better protection and making it suitable for summer use. Here are the methods to determine the suitable season for engine oil: 1. W stands for winter. The number before W represents the oil's fluidity at low temperatures. The smaller the number, the greater the fluidity of the oil. 2. The number after W refers to the viscosity index at high temperatures. The larger the number, the higher the viscosity of the oil, indicating better protective performance of the oil.