oil 1200gs 11 tc
Bought mine 2 years ago and it had done 10000 miles TC engine, had the same thing sometimes could smell oil, due to all the previous comments etc I am not sure if I over filled it. Now after owning the bike for a couple of years and got to know what they are like they tend to use about 500ml of oil every 2 thousand miles. Check after a long ride, don't worry if it is not right on the sight glass as long as you can see a bit she will be right, never smell oil now but service the bike IAW BMW schedule and drain the oil and remove filter while the engine is warm after a long ride and leave for at least a couple of hours. After you have replaced the oil filter etc, fill the engine with oil slowly to the correct level on the centre stand on level ground (TC) 4 Litres max but would always fill to about 3700 ml due to oil on engine components etc and check later after a good ride.