What kind of oil should I use for my Audi A4?

I recently bought a used Audi A4 and I want to make sure I'm using the best oil for my car. Can someone recommend a specific type or brand of oil that works well for this car model?

For your Audi A4, it's best to use a fully synthetic oil with a viscosity of 5W-30. This will provide the best protection and performance for your engine.

I would recommend using an oil from a reputable brand like Mobil 1 or Castrol for your Audi A4. Just make sure it meets the specifications of your car's manual.