Like I said before a better and more expensive oil will reduce teh wear and tear between the mechanical parts and prolong their life. But this has to be weighed against other aspects such as how often do you ride, how do you ride, where do you ride, in what conditions do you ride and what is your service interval and whether your SVC is compliant with the extended oil change intervals of the 7100 and 300V oils and the like.
To me the 15w50 is more than enough for the style of riding I have and for the conditions I ride in. I do mostly city rides and track days during the weekends. However in the city I dont change gears early like most Indian riders do because that is counterproductive. I take it all teh way to 5k or 6k rpms before shifting. If you try to shift at 4k or less you are technically lugging the engine because the bike has excellent mid end torque not low end torque.
That being said, I will shifting to 10w40 mineral oil in my next service because I wont be doing track days for a few months. Best way to understand the difference between the oils is for you to try out this yourself. The feeling will be subjective but the function is definitely objective.
If money is not an issue, you might as well try out the 7100 10w40 if you want absolute best for your bike.


. I will do the same too.
I don't exactly have a benchmark for 7100 but I guess Mobil 1 could fight fair and square for the "Absolute best" position.

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