Dalong Motorcycle seems to be a brand owned by the former Qingqi Group, but it has nothing to do with Jinan Qingqi. It is located in Jiangmen City, Guangdong Province. This kind of car is only a third-line brand. Don't expect good quality. Whether it can be used or not depends on luck sometimes.

Did the dipstick at the gas station leak oil? Check whether the dipstick cover and box are flat, and whether the O-shaped rubber ring is damaged or loose, and replace it if necessary. In addition, don't screw the dipstick too tightly, or the engine may be deformed and leak oil after being heated. But generally there is only a slight oil leakage, not as serious as oil leakage. If there is oil leakage, the dipstick or O-ring is probably broken. Stopping there does not leak oil because the oil sinks below, and the engine has no pressure at this time, but when walking, the oil will be thrown up and the engine will have pressure. In addition, if there is gas in the engine when the dipstick is unscrewed, check whether the breather pipe is blocked.