I was just searching for information on motorcycle oil the other day for my NC700! Thanks Highlifter for clearing the air. My dealer doesn't even sell 10w30 for me to buy unless it's special order, so I wanted to find evidence that 10w40 was ok which is what my dealer uses. Couldn't find any JASO MA approved 10w30 anywhere. Even though the Rotella 10w30 I can get may be ok, I really want that approval for my own piece of mind. I found a picture of that page in the service workshop manual when doing a Google search that clearly showed both 10w30 and 10w40. Dealer also said do not do 8k for oil changes unless I'm doing long distance highway touring. Recommended 4k. This website looks to be a great resource and I hope I can find something to contribute myself, as small as that may be!