Thanks for the link. I did finally hear back from Motorrad Germany. I had explained to them that I had contacted Motorrad USA several times and got no satisfactory answer about the contradiction between the manual and the website. But M. Germany said they would refer my question back to M. USA - so thanks a lot for nothing. It's a real head scratcher to me that my F850GS manual recommends regular gas with no further explanation. I intend to ignore what's written in the manual for three reasons. First, their website specifies premium. Second, the info from the Cycle World article that I referred to earlier. Third, the engine has a compression ratio of 12.7 to one which certainly should need premium fuel to run most efficiently. Up until now I've been running regular with no issues and others have been doing the same so I know it can be done. If I can't find premium in the future I won't worry about using regular but from now on I will use premium when it's available.