Just to back up what others have said.
Obviously not available in BC Canada, definitely not at Walmart, or Lordco the auto parts store. Can not get 15 40.
However I use the HD diesel oil in the older bikes, and the synthetic in the 006 SV1000S.
Bluzu does not like the wrong oil, the gear box and the clutch are quite particular. Good synthetic or nothing.
Some one told me using synthetic in my 83 XS400 would quieten the rattle when I first fire up. No change, might rattle more. Gear box is not crazy about it. So I will go back to the regular stuff. Yami the 79 XS1100 loves the HD Rotella. There are probably other good quality oils as well. My Yanmar diesel engine in the boat runs on it too. So does the 41 Ford tractor, although I could probably use cheap stuff.
UK