Originally Posted By: badtlc
That is my current stance too if nothing will hold up longer than 2-3k.
From UOAs I've seen here I expect Mobil 1 4T and Motul 300V both to last longer than that in a bike like his. They cost more, but if your research (or UOAs) agree with mine, you might change your oil less often. Is it worth it? Maybe depends on the deal you get, how much you value your time changing oil, how long you'd leave either one in, etc.
Lately I've been using Rotella T Triple Protection 15W40 about 4k miles, and Mobil 1 4T about 5k miles. I don't remember Rotella UOAs very well, but my guess would be it would have sheared out of grade by then, but not too badly. My guess with the Mobil 1 is it's still in grade by 5k miles, assuming fuel contamination wasn't an issue.
With those intervals I haven't been having shifting issues. When I used lesser oils in the past I have had shifting issues develop, and at shorter intervals (2-3k mile range). Don't remember having them with any of my current bikes though.