13k miles? That is something. I get far less than that from my sport touring bikes/tire combos. I'm not getting anywhere near 50MPG on my '99 either. One of us is doing something wrong. lol
Once these Michelins that came on the bike wear out, I'm likely to go with Q2 or RoadSmarts.
Best motorcycle oil, 'eh? Thems is fightin' words! lol