What is the best oil specification for Audi Q5?

[BriellaRose]

Audi Q5 is best suited for SM-grade full synthetic oil with the same specifications as the original factory oil, labeled as 5W-40. Below is a detailed analysis of the oil specifications: Oil quality grade: Engine oil quality grades are classified into SA, SB, SC, SE, SF, SG, SH, SJ, SL, and SM. The quality of gasoline increases sequentially from front to back. The "S" stands for gasoline engine oil, and the following letters represent the grade. Low-temperature viscosity grade of oil: Low-temperature viscosity grades are divided into 0W, 5W, 10W, 15W, 20W, and 25W. The smaller the number, the better the cold-start performance at low temperatures. "W" is the abbreviation for winter, indicating low-temperature performance. For example, 0W oil will freeze at -35 degrees Celsius, while 5W oil will freeze at -30 degrees Celsius.

[KarterLee]

My Q5 has been running for five years, and I've always used 5W-40 full synthetic oil. Any brand that meets the Volkswagen VW502 00 certification will do. I've tried other viscosities before, but this one maintains more stable oil film at high temperatures, making it particularly suitable for our older turbocharged engines. I mostly commute in the city, and during summer traffic jams when the engine temperature rises, the 40 viscosity provides better protection for the cylinder block. I'm not picky about oil brands—I've used Castrol Edge and Mobil 1, both worked well. The most important thing is to stick to regular maintenance. I change the oil every 8,000 kilometers on the dot, and now with the car nearing 100,000 kilometers, the engine still runs quietly. Remember to check the certification number when buying oil—some cheaper products claim to be suitable for German cars on the packaging but don't actually meet the standards.