Hi, I was wondering if you guys can give me some advice on choosing a good oil for my sportbike. I have a 2013 Yamaha R6. Right now I mainly ride street, but I'd like to start doing Trackdays this year as well. The two main oils I've been considering are the Motul 300V and Maxima Extra. My concerns with the Motul are the lack of any API and Jaso ratings and the supposed lack of detergent in the oil. I usually change my oil between 2-3K, so extended oil change intervals are not important to be. Should I be concerned about these things? As for the Maxima Extra, are there any disadvantages to such high zddp levels this oil supposedly has? My bike has a full aftermarket exhaust, so no cats or O2 sensor to worry about. I've also considered Amsoil's Metric M/C oil, just not sure whether or not Amsoil lives up to all the hype, and finally Mobil 1 4T. Do any of these oils consistently show better UOA reports? So, out of the oils I've listed, which one would you guys recommend for my R6? I really appreciate any advice you guys can give me!