In their defense, he may only have meant admitting to using an oil that wasn’t:
Yamalube 10w40, 10w50 OR any SAE 10w40, 10w50, API service SG type or higher, JASO stan-dard MA
And that would mean never buying a new Yamaha again in my area and my wife wants the MT-07. Not too many Yamaha dealers here in harley country.
Just a question over the quality of yamalube and if full synthetic is good for the max. I have heard the stories of the final drive oil being a certain kind that they use on the R1 or something and just don’t want to do anything mean to the only bike I’ve had that I don’t think I’ll ever sell short of a life altering scenario that requires $$$$ or causes me not to physically be able to ride. Thanks for the info tho, headed to the Yammie dealer this weekend!