It adopts high-precision weighing sensing and metering, fully intelligent computer board to precisely control equal amount of oil change, one-person operation, four-wheel pumping at the same time, can quickly complete the oil change work, saving time and effort. Professional customized tubing is used to avoid corrosion. Internal modular design, the failure rate is very low. High precision and equal exchange of old and new oil, and add as much new oil as old oil is extracted to avoid air entering the brake system. Is the brake system maintenance right-hand man.