reply 1# \ "It is said that the cylinder will be pulled after the running-in period of 1111KM \"----------------------It's not called cylinder pulling, but it's still amazing! ! ! ! ! Cylinder-pulling refers to the abnormal wear of the piston and cylinder liner caused by the engine working under oil shortage or high temperature. It should be said that after the running-in period of 1111KM, it is necessary to run the high speed properly and pull the speed of the car, so as to maximize the power of the engine! ! !