How do I diagnose a possible coolant leak in my Audi 80?

I recently noticed a decrease in the coolant level of my Audi 80. How can I determine if there is a leak and what steps can I take to fix it?

First, check for visible signs of a leak such as puddles under the car or discoloration on hoses. You can also try pressurizing the coolant system or using dye to detect a leak. If you're unable to find the source of the leak, it's best to take it to a mechanic for further diagnosis.

You can also try using a UV light to find any leaks that may not be visible to the naked eye. Make sure to check all seals and gaskets as well. If the leak seems to be coming from the radiator, it may need to be replaced.

In some cases, a coolant leak can be caused by a blown head gasket. This is a more complicated issue and will likely require professional help to fix. Make sure to monitor the temperature gauge and have the car checked as soon as possible to prevent further damage.