I've had to top up the coolant level in the radiator expansion tank on my Audi A2 today. The manual says it's important to maintain a 40% mix of anti-freeze to water but that you can top up with plain water in a emergency (which is what I did). How important is this ratio, and how much liquid does the tank hold? I probably put about a litre into it, and I don't want it to freeze with the cold weather coming up.
- posted
18 years ago