There have been owners here with 200,000+ miles on their bike with no clutch problems while using 100 percent synthetic oil. I had a bike with 165K on it with no clutch issues and it always had synthetic oil in it. The only thing that people on this board will agree on with respect to oil is that there is no agreement as to what oil should be used. Most people will agree that energy conserving oil is bad, but I've seen a couple of people say that does not matter.Greg - you sure have got me thinking about switching to non-synthetic Honda oil on my 12 GW with 20k miles.
I've always used Mobile 1 in my bikes - but the GW is new to me and you are very credible to me based on your GW experience.