Why is 40-weight oil recommended for the Audi A3?
1 Answers
40-weight oil is more suitable for the Audi A3, as it provides better engine protection. Relevant information about engine oil is as follows: 1. Oil grades: Engine oil grades are divided into three categories: summer, winter, and all-season oils. Winter oil grades are: 0W, 5W, 10W, 15W, 20W, 25W; summer oil grades are: 20, 30, 40, 50; all-season oil grades are: 5W/20, 5W/30, etc. 2. Interpretation of "W": W stands for winter, and the smaller the number before it, the better the oil's low-temperature fluidity, indicating a lower usable environmental temperature and better engine protection during cold starts. The number after "W" (after the dash) represents the oil's high-temperature resistance, with higher values indicating better protection under high temperatures.