Strictly controlling the amount of oil in active transmission has a great influence on its function and service life. If the oil level is lower than the standard, the oil pump will inhale air, which will cause the air to mix with the working fluid, reduce the oil pressure, and make the control valves and implementing components act inaccurately, resulting in operation failure; Assuming that the control valve body is immersed in the active transmission oil, the oil drain ports of the brake and clutch in the hydraulic pipeline will be blocked by the active transmission oil. Refueling methods

　　The correct way is to park the car on the level road, put the gear selector into the parking space (P gear), and write the active transmission fluid from the fuel port to the standard. Start the engine, with the engine idling, move the gear selector to return to P after all gears, and then refuel to the standard. Strengthen inspection

　　The inspection conditions of oil quantity are different for different manufacturers of active transmission. During the inspection, it is usually required: the transmission is in the hot state (oil temperature is 50 ℃ 80 ℃), the engine is idling, and the gear selector of the active transmission is rotated in each gear lever position for a short time, so that the oil can fully change the torque and the oil cylinder. The oil level should reach the upper limit scale on the oil dipstick.

　　Oil quality inspection

　　Normal active transmission fluid is clear and reddish. If the oil is not used properly, it is easy to change. When there is no testing equipment, it can only be judged from the appearance. You can twist your fingers to feel the viscosity, and smell whether there is a special smell with your nose.

　　Inspection of oil temperature ventilation pipe

　　Oil temperature is an important factor affecting the service life of active transmission and active transmission. Pay attention to check whether the temperature of the transmission case is normal during driving. If the temperature is too high, park the car for repair immediately.

　　Timing replacement

　　Most of the active transmissions need to replace the operating oil regularly. The oil change cycle is 0.81 million km for domestic cars and 240000 km for imported cars. When parking for more than one year, the oil should be replaced completely.

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