Using a fluid exchange machine to replace transmission fluid does not harm the transmission. However, compared to traditional methods, fluid exchange with a machine consumes more oil and is more expensive. It is undeniable that the fluid exchange method achieves the highest rate of fluid replacement. Currently, many service shops still use the traditional manual method to change automatic transmission fluid for customers. This manual method involves removing the drain plug of the transmission to allow the fluid to drain out naturally. While this process is convenient and time-efficient, it is not thorough, as only one-quarter to one-third of the old fluid can be drained. Many service shops still use this method, but since the new and old fluids mix after adding the new fluid, the fluid inside the transmission remains impure, leading to less satisfactory overall results.
On the other hand, fluid exchange with a machine uses specialized equipment to create pressure, dynamically replacing the fluid in the transmission's lubrication and cooling lines. This method takes longer, around one hour, but has the advantage of being more thorough, removing over 95% of the old fluid, and effectively cleaning out sludge and metal particles from the transmission. By using a machine for fluid exchange, the interval between fluid changes can be extended to 60,000 kilometers. Some car owners may worry that this method could cause significant damage to the transmission. However, aside from the higher cost, the advantages of using a fluid exchange machine are numerous.
Basic Process of Fluid Exchange Using a Machine:
1：First, loosen the drain plug to drain the old fluid (approximately 3 liters of old fluid will be drained). Then, remove the oil pan screws to continue draining the old fluid (approximately 1 liter of old fluid) and clean the oil pan.
2：After cleaning the oil pan, install a new automatic transmission filter. Once the replacement is complete, reattach the oil pan and connect the fluid exchange machine to replace the transmission fluid. The vehicle needs to be started during the fluid exchange process.
3：At this point, new fluid is injected into the transmission while the old fluid is pushed out by pressure.
4：During the fluid exchange process, you can clearly observe the transition between old and new fluid through a viewing window. The color in the old fluid window will gradually change from dark black to red until the new and old fluids are the same color.
