Should the Tiguan use 5w30 or 5w40?

[AlessandraDella]

The Tiguan uses 5w40. According to the Volkswagen Tiguan manual, the recommended oil type is SL5W40 grade oil. The following are the differences between 5W-30 and 5W-40: In terms of fluidity: 5W30 has better fluidity than 5W40, which can further reduce fuel consumption, has better heat dissipation performance, and produces less noise. In terms of applicable vehicles: 5W30 is more suitable for new vehicles, while 5W40 is more commonly used for older vehicles. In terms of stability: 5W40 performs better than 5W30 under high-temperature conditions, with superior stability and less fluctuation.