I started using fuel ox about 6k miles ago. The stuff works!!! Ive got am 08 pete 389 with a c15 acert sdp model. First i noticed the motor ran smoother, quieter and started a bit easier.
After i used the first bottle of 16 oz i pulled the intake air hose and was shocked at how much cleaner the intake is compared to a month before when i was doing some maintenance. So i called Ben at fuel ox the next day and bought a case.