10w-30 is no good anymore way to thin since Kawi changed specs last Sept. actually getting past rings. They are recommending 10w-40 but now 20w-50 I am reading since drought has taken over most the US we been hit by about 2 months now last few weeks seen temps at constant 100+ with humidity, friday was 114 at 11:30am and going to be back to that the rest of week looks like. I had to move grades even my dealer has JD only supplies 10w-30 to it's full green dealers so I am just getting mine by the case off EBAY ships directly from Kawisaki, now I gotta move to 20w-50 so waiting to see if he will be supplying cases of that. I pay $78 for a case of true K-Tech I have seen quarts last year of it up to $13 a pop. I change oil every 50hours on the mark.