So my bike has 21K on it, and recently completed the 20K service at the dealer, which included replacing the fuel filter. So I'm filling up and figure let me pour a bottle of this in the tank as I'm filling up. I ride away and as soon as the bike starts it feels smoother. The more I rode, the more I enjoyed my bike and how it did not have the rough idle and motor vibration. So the tank needs to be filled up again, and this time I figured we cleaned the fuel injectors...etc. We will just run with straight gas 91 octane from Union 76. My bike lost it's smoothness! Anyone had similar experience? I would love to have my bike run all the time with the STP in it. It is a much more enoyable ride, but concerned what damage it may do longterm to the motor.... Any Ideas?