Originally Posted by ipsedixit
The system will tell you you need to top off.
I wouldn't do anything until you get a notification from the iDrive system.
And when you do get a notification, just take it to the dealer and they'll top it off for you for free (as long as you are under the 4 year maintenance program).
Thanks for your response.
I know I should trust the electronic level, but having had a transducer failure in my 535d, I'd feel more at ease with the back-up of a good old fashioned dipstick. Makes you wonder why the diesel engines, which hardly use any oil, have one, whereas the petrol units don't - logic dictates that it should be the other way around.
As to a free top-up at the dealer, I don't think that applies in the UK