This is the oil for breaking in the motor. We have received positive reviews from famous YouTubers and racers. While we don't claim this oil is the absolute best, please try it as one method for break-in. It's easy to use: apply the oil through the end bell hole *while* the motor is running. The RPM will increase after applying the oil, so run it for about 5-15 minutes. The RPM should increase significantly. Because it's strong, be sure to clean thoroughly after break-in. Class 4, Group 3 Petroleum, Hazardous Class III Store below 40 degrees Celsius. Keep away from fire. Price is per bottle.