Does it matter if you haven’t changed the transmission oil for 300,000 km?

300,000 kilometers without changing the transmission oil, there is an impact. Generally speaking, when the car has traveled 40,000 kilometers or been used for 2 years, the transmission oil of the car should be replaced. The transmission oil has not been changed for 300,000 kilometers, which means that the oil has not been changed for a long time, which is relatively large for the internal wear of the transmission and may damage the transmission.

The consequences of not changing the oil in the gearbox for a long time are: the concentration of the gearbox oil increases, which reduces the heat dissipation function of the gearbox; accelerates the wear of the parts and damages the automatic wave planetary carrier; causes the gearbox oil to deteriorate and the oil particles become larger Or the generation of debris will block the oil circuit; the gears in the gearbox will be damaged, which will affect the normal operation of the clutch plate and the normal operation of the gears, resulting in a decrease in the clutch pressing force.

The way to change the transmission oil is:

1. Remove the protective plate of the gearbox, loosen the screws on the oil pan, and drain the old gearbox oil;

2. Open the screw of the oil pan and remove the oil pan;

3. Then put sealant on the new oil pan and tighten it;

4. Loosen the screw on the left side of the gearbox to replace the gearbox.

Replacing the transmission oil is not only to replace the oil, but also the transmission oil filter, which has the same function as the oil filter, that is, to filter the magazines in the oil, making the transmission oil more pure; it is also necessary to clean the transmission oil pan, If possible, it is best to remove the oil pan. You can see that there is a thick layer of oil inside, and there are debris in it, which should be cleaned up. Otherwise, changing the new transmission oil will not be very effective.