Not wishing to make this even more confusing or contentious (sort of the definition of an oil thread really)
but i also have a wet clutch on my FJR and so have been using Rotella T6 Syn on that -
On the FJRforum - there has been a lot of recent debate that the Rotella T6 formula has changed and it doesn't work so well on Wet clutches (introduces "notchy" shifting) - NOTE THERE IS NO REAL EVIDENCE TO SUPPORT THIS.
One member who has ridden 85K miles or more on his FJR and seems pretty knowledgeable Says this
"synthetic Mobil1 15W50 oil (it is slightly cheaper per quart than Rotella T synthetic) and have been pretty happy with it overall. It is rates API service class SN, and though it is not JASO MA certified, it is not an energy conserving oil formula and has never been a problem on the wet clutch of the FJR."
So i think go with JASO-MA if you want to be safe - but there may be other options out there that also don't have JASO-MA on them.
Im on the fence - i have noticed shifting to be nothcy and am wondering if i should go to something else - as i change every 4k im not sure i need synthetic - but i have a gallon sitting there ready for my next change - anyway as they say YMMV
(on a side note - on fjrforum - all oil threads end up in a special forum called - Never ending, Pointless or recurring threads (NEPRT) - as there are so many questions that are similar - just saying , enough said !

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