I have to agree with Glider, works for me doesn't mean much to me if guys are trading every couple of years. Almost any oil will keep things turning for short time. I, however plan to keep my bike for a long time and many miles. The dealer told me just to use Syn3 in all 3 holes. I've owned enough trucks, tractors, combines and vehicles to know there is good, better and best. I wouldn't think of putting gear lube in a motor so why would I put motor oil in a gear box? Totally different types of lubrication are needed for each. Synthetic oil is much slippery so I wouldn't want it on a wet clutch.