A friend of mine is a Schaffer oil rep. I recently emailed him the engine oil specs for my oil-cooled boxer and what Schaffer can offer. He sent this reply:
Schaeffer's chief chemist Larry [redacted] confirmed that Schaeffer motor oil (with moly) can be used in your BMW motorcycle. The two oils which would be suitable are:
a. 705 Supreme 7000 Synthetic Blend 20W-50 Racing Oil. This oil has moly, Penetro, and extra zinc in it. I stock this and a 12 qt case is $66.24.
b. 9001 Supreme 9000 Full Synthetic 5W-50 Racking Oil (also with moly, Penetro, and extra zinc). A 12 qt case is $68.64. I do no stock this one but could get a case for you for your next visit into town.
2012 R1200GS Rallye