How many times to change the gearbox oil by gravity, three times for the method of changing gearbox oil by gravity

The gearbox oil needs to be replaced in time after a period of use. When replacing the gearbox oil, many friends will choose to use the gravity oil change method, but the gravity oil change method cannot completely replace the old oil. It needs to be replaced several times. OK, how many times do you need to change the gearbox oil by gravity?

If the gearbox oil is used for a long time, sludge will deposit to the bottom of the gearbox oil shell, and the gearbox oil will become black and thick, which will affect the lubrication effect of the gearbox, causing the car to frustrate and shift gears not smoothly. The gearbox oil can be replaced with a circulating machine, but these substances are difficult to remove by the cooling pipeline, and the cost is high. Gravity oil change is economical, but it is not clean at one time. It needs to be changed and flushed several times. Gravity change gearbox oil needs 2-3 times to remove the sediment. If possible, it is recommended to change it three times. Cleaner.

The method of changing the gearbox oil by gravity three times, unscrew the oil drain screw at the bottom of the car gearbox, the gearbox oil flows out with gravity, the color is much clearer than the previous two times, and the fluidity is better, wait for the gearbox oil If it does not flow anymore, screw on the screw and add new oil. Generally, it is recommended to change it every 300 kilometers.