Three myths about changing automatic transmission fluid

21/05/2021

Although it is impractical to ask every driver to drive a car with standard movements, it is not difficult to do a good job of automatic transmission maintenance outside of driving. In automatic transmission maintenance, the selection, inspection and replacement of transmission fluid is an important element. The three common misconceptions of car enthusiasts about replacing the automatic transmission fluid, as collated by a unified full synthetic oil veteran driver.

  Myth 1: Automatic transmission fluid does not need to be replaced

  Faulty vehicles in the automatic transmission of each friction plate serious ablation, blade jammed and lead to the car can not drive. The main reason for the failure is due to the serious loss of oil or deterioration of the automatic transmission fluid. It is understood that among many car owners, there is no awareness of changing the automatic transmission fluid. There are some failures are just changed soon after the automatic transmission fluid, and the replacement of poor quality oil and not according to the type of oil change, will also lead to the automatic transmission "short life".

  Uniform fully synthetic oil old driver from the practice of repairing automatic transmission found that more than 80% of the automatic transmission failure is caused by the deterioration of the automatic transmission fluid. Do a good job of automatic transmission fluid inspection and replacement, in fact, is a good maintenance of the automatic transmission, can extend the service life of the automatic transmission.

更换自动变速箱油三大误区(图1)

  Myth #2: Wait until the fluid goes bad before replacing it

  Some automakers claim that their automatic transmissions do not require fluid inspection and replacement. In fact, when you wait until the fluid deteriorates to replace it, it is likely that the entire automatic transmission will have to be replaced. The automatic transmission fluid replacement interval is based on the number of kilometers driven or the use of time, if both indicators are given in the vehicle manual, then the indicator that comes first will be implemented. If the vehicle manual does not indicate the automatic transmission oil change time, then in accordance with 40,000-60,000 km of mileage or every two years to replace.

  Myth 3: Manual replacement of automatic transmission fluid can be

  Some car owners are aware of the need to change the automatic transmission fluid at the right time, but they think that they can just leave the job to the auto repair store. In fact, if a different oil change method is chosen, it will bring completely different results. Currently, many service stores still use the traditional manual oil change method to change the automatic transmission fluid for car owners. This manual oil change method is to open the oil drain screw of the automatic transmission and let the oil inside drain naturally. Although it is easy to operate and less time consuming, the oil change is not complete, and only a quarter to a third of the old fluid can be released. At present, a considerable part of service stores follow this way of oil change, because after adding the fluid, the old and new fluids are mixed, and the fluid inside the automatic transmission is still in an impure state, so the oil change time can only be shortened.

  In contrast, if you use the machine oil change method, the use of special equipment to generate pressure, the transmission's lubricating oil tube and cooling oil tube in the dynamic replacement of oil, this method of the whole process takes longer, about 1 hour, but the advantage is that the oil change is more thorough, can release more than 85% of the old fluid, and can be cleaned of the internal oil scale and metal chips of the automatic transmission. By means of machine change, the fluid replacement cycle can reach 60,000 km. Therefore, it is recommended that car owners have an understanding of which oil change means the store takes.