Over the last few riding seasons, i've observed that my cycle runs better on the last and first ride of each riding season. I figured at first it was emotional: sadness of the last ride for a few months, and the joy of the first ride. It was actually due to the fuel stabilizer in the tank. I tested this theory last summer, adding some mid season. Sure enough the cycle ran smoother, and was more responsive. Why? Is todays fuel as awful as some claim, or could the stabilizer be helping cover some other deficiency on the bike? The cycle in question is a gs1150 with k&n pods, dynojet stage 3 jet kit , and a yoshimura 4 into i exhaust. The bike doesn't run poorly without the stabilizer, just slightly but noticeably better with it.