Originally Posted by Poe
Forgive me... I'm new to the BMW boxer... recently bought an '03 1150GS. I figured since it's a dry clutch and the engine oil is kept separate from the transmission oil, you could safely run any common "car oil" in the proper weight. Does anyone run Mobil-1 15w50 in their GS? Any reason why I shouldn't?
If someone were to do a poll..and add up the results, I think you would find, 15W-40 is by far the most used..(or 15W-50) from Mobil or Delo or Rotello.
Diesel oils with high TBN numbers...