How to maintain a smooth running engine in the Audi 80?

The Audi 80 is a complex machine with an equally complex engine. How can I ensure that the engine runs smoothly and avoid any potential problems?

Regularly check and change the engine oil and filter. This helps to keep the engine well lubricated and prevent any build-up of dirt and debris.

Ensure proper coolant levels and regularly flush and refill the cooling system. This helps to prevent overheating and potential engine damage.

Keep up with regular tune-ups and maintenance. This includes spark plug replacements and timing belt checks, which can greatly impact the engine's performance.