What is the most efficient oil type for an Audi 80 engine?

I am unsure about which oil to use for my Audi 80 engine. Can someone recommend the most efficient type of oil for best performance and longevity?

Based on my experience, I highly recommend using a synthetic oil for your Audi 80 engine. It offers better protection and lasts longer compared to conventional oils.

You should always refer to the owner's manual and use the recommended oil type for your specific model of Audi 80. This will ensure optimal performance and prolong engine life.

Personally, I prefer using a high-quality conventional oil for my Audi 80. It provides good protection and is more affordable than synthetic oils.