I ride a 07 S50. Normally I run 87 octane in it and use 93 octane in the ninja 250 I have (my go to work bike). I accidently put 93 octane in it last Sunday to go cruising. After runnig aprox 145 miles I refueled the little beast and found that I got 63 miles to the gallon! WOW. Was this the wrong thing to do or is my bike too lean?:-?