What’s the Difference Between a Transmission Flush vs. Change?
A transmission change involves draining the old transmission fluid and replacing it with new fluid.
This is a simple and quick process. It’s also a common maintenance service recommended to be performed between 30,000 miles and 100,000 miles for automatic transmissions.
However, with a transmission fluid change, not all the fluid is usually drained. This is simply because some of it will remain in the torque converter or the cooler lines.
This is fine because the new fluid will still work hard to keep the transmission cool, clean, and working at its peak.
A transmission flush is more involved than a transmission change. Although the goal is the same of both processes, a flush involves removing every trace of transmission fluid from the whole system.
When mechanics perform a transmission flush, they use specialized tools to remove all the fluid from the transmission system to remove debris that might be left in hard-to-reach components.
When To Get a Transmission Flush vs. Change?
As mentioned, a transmission change is a common service that is recommended by vehicle manufacturers. Not all manufacturers recommend a flush, though. Oftentimes, a fluid change suffices.
The best way to know when to get a transmission fluid change is by checking your owner’s manual.
Your manufacturer or mechanic might recommend a transmission flush if you put your vehicle through heavy use regularly or your transmission fluid is burnt.
Why Do You Need a Transmission Flush or Change?
The metal parts of your vehicle require lubrication. That’s exactly what transmission fluid provides to your entire transmission system.
Parts like the torque converter, modulator, and planetary gear set are immersed in the transmission fluid while your vehicle is running. As it runs through the transmission, the fluid:
- Keeps the surfaces of the metals clean
- Cools the system
- Keeps parts rotating at optimal speeds
Changing your transmission fluid at your vehicle’s recommended intervals will help keep the transmission running in top shape and prevent issues associated with dirty fluid.
If you think you might need a flush for your next service, though, our technicians are happy to inspect your fluid and advise you on the best course of action.