Service life as claimed, could it be as simple as "others" have no idea what service life, shearing, viscosity and all those cute little number mean?. Yes I will get flamed for that, but you read some of these posts and you just have to wonder. Please don't get me wrong, I am all for learning and trying new ideas and solutions and after all this is a open forum where 80% of what is read is opinion and out right rubbish, but that what it is.
I have found in this day and age people who listen to their machines and have the ability to take care of them are becoming a rare breed. Shops like KMC, Southern Motorworx and TVS make a good amount of business from those who either would rather pay someone else or can't do themselves.
One guy I know stated that's is what the manufacture recommends why should I change? but then again he only rides about 4-5 thousand miles a year.
As to the labeling of their product, it isn't magic stuff in a bottle and if the factory is buying it in huge quantity is is going to be cheap stuff from an economic standpoint. So with no API service label and no recommended API service oils I am assuming that Victory is just trying to keep you coming back for more. One could say it is a great marketing strategy for those who do not think, or just a way to sell cheap oil at Synthetic prices.