What is the best oil type to use for a 1993 Audi 80?

I recently purchased a 1993 Audi 80 and I'm not sure which oil type to use. Can someone with experience in Audi cars provide some insight?

The best oil type to use for a 1993 Audi 80 is 5W-40 synthetic. It provides the best protection for your engine and improves fuel efficiency. I've been using it for years and have never had any issues. - John

I highly recommend using 5W-40 synthetic oil for your 1993 Audi 80. It provides better lubrication and performance compared to conventional oils. This is especially important in colder climates. - Karen

I've been using 10W-40 conventional oil in my 1993 Audi 80 and it's been working perfectly. It's cost-effective and provides enough protection for my engine. - Mike