Cool, just went to the guy from Sweden's link, XT1200, Shell does make an MA/MA2 motorcycle specific oil, Shell Advance, MC. I used to use an MC spec Castrol oil until my shop closed, ACT-EVO, straight dino or a syn. It's still available, just not handy. I use the Valvoline MC spec in the Tenere now because my Napa store has it on the shelf. I have no problem using automotive oils, I have in the past. I've always known to look at that API roundel. After this thread I've learned you should use one of the older obsolete spec oils. I've learned when API started, in the 20's?, they were at SA, they're now at SN... SF/SG is apparently safe for a wet clutch and shared tranny. Higher zinc content than today's SM/SN? I think that was what it was.
More info than I needed to know. ::010::