In the past 6 months of having a pre-owned E60 520i, I have the message 'Coolant level too low' twice. And both times the dipper is well below and need to top up. It is quite regular at about 3 months interval.
Is it a sign of leaking or is the E60 engine simply too hot for daily drive and dries up the coolant very rapidly? I only do 70-80km every day and previous rides never had this issue before, other than when there is radiator leaks and total zero coolant.
Anybody else had this experience before?