Transmission oil is an indispensable part of the normal operation of the car, it is responsible for lubricating and cooling the various parts inside the gearbox to ensure the normal operation of the gearbox. However, in some cases, the transmission fluid cannot be changed at will, and here are four situations in which the transmission fluid cannot be changed:
First of all, there is no need to change the transmission oil when it is in normal condition. Transmission fluids usually have a long lifespan, and if they don't have cloudiness, odors, etc., during use, then they can continue to be used. In this case, changing the transmission fluid too soon can cause unnecessary waste and may even cause damage to the transmission.
Secondly, when the gearbox fails, the transmission oil cannot be changed at will. Transmission failure can be caused by a variety of reasons such as wear and tear of mechanical components, faulty circuits, sensor failure, etc. Blindly changing the transmission fluid in the event of a failure may not solve the problem or even make it worse. Therefore, before changing the transmission oil, it is necessary to conduct a comprehensive inspection of the gearbox to find out the cause of the failure and repair it.
Thirdly, when the transmission fluid model does not match, it cannot be replaced. Different models of transmission fluids have different lubricating properties and chemistries, and if a mismatched transmission fluid is used, it can cause damage to the transmission. Therefore, when changing the transmission oil, it is essential to choose the transmission oil that matches the model and transmission model.
Finally, when the transmission fluid is contaminated, it cannot be changed at will. Transmission fluid contamination can be caused by too long use, impurities entering the transmission, etc. In this case, if the transmission fluid is changed directly, contaminants may be introduced into the transmission, causing more damage to the transmission. Therefore, before changing the transmission oil, the transmission must be cleaned to ensure that the inside of the transmission is clean.
In short, the change of transmission oil needs to be judged and decided according to the actual situation. Before changing the transmission oil, the transmission must be thoroughly inspected to ensure that the transmission is in working order and that the matching transmission oil is selected for replacement. At the same time, it is also necessary to pay attention to the operation specifications and safety matters during the replacement process to avoid unnecessary damage to the vehicle.