What is a transmission flush?
A transmission flush is a process to remove any debris and sludge inside of the transmission. First, all of the oil in the transmission is removed. Then new oil, and occasionally cleaning solutions, are run through with a machine to push out the debris and sludge. Finally, the transmission gets filled with new and fresh oil. The average cost of a transmission flush is approximately $125 to $250.
Why is it important?
While you can change the fluid in between services, this will not be as beneficial as a flush. Getting a transmission flush every 30,000 miles can help ensure that your automatic transmission has a long life. Additionally, keeping debris and sludge out can help to improve fuel economy and improve shifting. The fluid used in the transmission is thicker but as time goes on, it becomes thinner and will need to be replaced completely.
What can happen if it’s not done?
If you don’t get a transmission flush regularly you may notice that your vehicle is not performing as well. You may start to hear grinding or other strange noises from the transmission. Shifting may become delayed or staying in the proper gear may become harder. If you’re driving and your vehicle jumps forward or backwards, that’s another sign your transmission fluid is full of contaminants. Your vehicle may also stall before moving.