Will using 5w40 engine oil damage the Vios?

[MacArianna]

Using 5w40 engine oil in a Vios will not damage the vehicle, but the viscosity grade of the oil must be selected with reference to the recommended viscosity in the car maintenance manual. Here are specific details about engine oil: 1. Both 5w-30 and 5w-40 have a wide applicable temperature range and are all-season engine oils. They provide fluidity for cold starts while also forming a thicker oil film at high temperatures to offer better protection for the engine. 2. The smaller the number before the W, the better the low-temperature fluidity of the oil, and the lower the minimum applicable temperature. The number after W refers to the oil's viscosity at 100 degrees Celsius. 30 is the high-temperature viscosity grade of the oil, and the higher the number, the better the engine protection performance of the oil at high temperatures.