In the morning, I got a warning for low coolant level. 8000km, 2.0 TDI. Never checked it. The dealer told me that it's normal to complete with coolant two times. If it happens more times, it's a subject for a service visit. I will fill it, tomorrow morning, with G13. Is it normal? Did it happen to you too? Any advices? According to the manul, I shall refill it when the engine is cold.