How to properly maintain and service the coolant system on an Audi 80?

I noticed my coolant levels are constantly dropping and my car is overheating at times. What are the necessary steps to maintain and service the coolant system on my Audi 80?

Start by checking for any visible leaks in the cooling system. If none are found, then it is likely that there is an issue with the radiator or water pump. These parts may need to be replaced. As for maintenance, it is recommended to flush and replace the coolant every 2 years or 30,000 miles, whichever comes first.