What is the best oil for an Audi 80 and how often should it be changed?

As a new Audi 80 owner, I am unsure what type of oil to use and how often I should change it. I want to ensure my car runs smoothly and keeps its value. Can anyone provide guidance?

For an Audi 80, it is recommended to use synthetic 5W-30 oil. As for frequency, it is best to change your oil every 5,000 - 7,500 miles to maintain proper engine performance and prolong the life of your car.

I have been using Castrol EDGE Extended Performance for my Audi 80 and have had great results. As for frequency, it is best to change your oil every 7,500 miles or once a year, whichever comes first.