After spending hundreds In oil analysis on the amsoil signature full synthetic and other full synthetics(not just taking their word that is good for that many miles), I’m more than comfortable running 10K on my accord and mustang. On the busa, oil analysis says 5k miles is the magic number, due to contamination from clutch plate wear. My concours14 says 7500 mile oil changes and there is guys on that forum using rotella t6 at 10k miles intervals for 200k plus miles and their bikes are still going.