What is the most important part to maintain in the Audi 80 engine?

I've had my Audi 80 for a few years now and I want to make sure I am taking proper care of the engine. What should I focus on to keep it running smoothly and avoid any major issues in the future?

Regularly checking and changing the oil is crucial for maintaining the health of your Audi 80 engine. Make sure to use high-quality oil and follow the recommended schedule for oil changes.

Another important part to maintain in the Audi 80 engine is the timing belt. This should be replaced every 60,000-90,000 miles to prevent any potential damage to the engine.

Don't neglect the cooling system of your Audi 80. Regularly check and refill coolant to prevent overheating and potential engine damage.