Should the Tiguan use 5w30 or 5w40?
2 Answers
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.
I've been driving for years, and choosing engine oil depends on the specific model year of the Tiguan and the climate. 5W-30 has good low-temperature fluidity, suitable for cold starts and fuel economy, while 5W-40 has higher high-temperature viscosity and wear resistance, ideal for hot weather or heavy loads. Volkswagen generally recommends oil meeting the VW 502 standard. Newer Tiguans typically use 5W-30 for better fuel efficiency, but for older models or driving in high-temperature areas, 5W-40 provides better engine protection. Don't just rely on the oil grade—check the manual or consult a professional shop to ensure the oil has the proper certification. Regular oil changes are crucial for engine longevity, and using the wrong oil can lead to premature wear. I've seen some owners face issues from careless oil changes, so it's better to be cautious. In northern winters, I use 5W-30 for smooth starts, and switch to 5W-40 for peace of mind during summer trips.
