Engine Oil Level Low

[jackliu0527]

I have a 2013 650 GC that have about 63k kms on it, I did oil change last at 60k and now it says Engine Oil Level Below Minimum add 1liter immediately when I measure engine oil level, no warning on idrive or the system what so ever, if I did not measure oil level I would not have know it was low, so i added a full bottle, drove around for about 30 mins, measure it about 3 more times during those 30 minutes driving, it still shows low level, I dont think I have a leak because I dont have a puddle of oil on my garage floor, however I am reluctant to add more oil because I read somewhere that the system is slow and I can risk of overfilling, so i wanna know

1. Should I add more?
2. why didnt the car warn me? if I didnt measure oil level i would not have known i was low
3. is the measurement accurate? i am still showing low oil level even adding a whole bottle

[drmlee]

whenever my 650 (n63tu) oil light comes on, the idrive/screen says to add 2