What is the best way to maintain my Audi's engine oil?

I have an Audi A4 and I want to make sure that the engine oil is always clean and topped up. How should I go about maintaining it properly?

The most important step in maintaining your Audi's engine oil is to schedule regular oil changes according to the manufacturer's recommendation. This will keep the oil fresh and prevent any potential engine damage. It's also important to check the oil level and quality regularly, and top up if necessary.