Is it better to flush or change transmission fluid?
When it comes to maintaining your vehicle's transmission, there is an ongoing debate about whether it's better to flush the transmission fluid or simply change it. The answer depends on several factors, including the age and condition of your transmission, as well as the manufacturer's recommendations. In this article, we'll explore the pros and cons of each approach to help you make an informed decision.
Flushing Transmission Fluid
Flushing the transmission fluid involves completely draining the old fluid and replacing it with fresh fluid. This process is typically recommended for older transmissions or those that have not been serviced regularly. Flushing can help remove built-up deposits and contaminants that may have accumulated in the transmission over time, improving its overall performance and longevity. Flushing is generally considered a more thorough and effective way to maintain the transmission.
- Removes built-up deposits and contaminants
- Improves transmission performance and longevity
- Recommended for older transmissions or those with irregular service history
However, flushing the transmission fluid is not without its risks. If the transmission is already in poor condition, the flushing process can dislodge larger particles and cause further damage. Additionally, some manufacturers may not recommend flushing, as it can disrupt the delicate balance of the transmission's internal components.
Changing Transmission Fluid
Changing the transmission fluid involves draining the old fluid and replacing it with new fluid, but without a complete flush. This is a more conservative approach and is often recommended by manufacturers for transmissions in good condition. Changing the fluid can help maintain the transmission's performance and extend its lifespan, but may not be as effective as flushing in removing built-up contaminants.
- Maintains transmission performance and extends lifespan
- Less disruptive to the transmission's internal components
- Recommended by many manufacturers for transmissions in good condition
The main advantage of changing the fluid is that it is a less invasive procedure and poses a lower risk of causing further damage to the transmission. However, it may not be as effective in removing accumulated deposits and contaminants as a full flush.
Conclusion
In summary, the decision to flush or change the transmission fluid depends on the age and condition of your vehicle's transmission, as well as the manufacturer's recommendations. Flushing is generally considered a more thorough and effective way to maintain the transmission, but it also carries a higher risk of causing further damage if the transmission is already in poor condition. Changing the fluid is a more conservative approach that can help maintain the transmission's performance and extend its lifespan, but may not be as effective in removing built-up contaminants. Ultimately, it's important to consult your vehicle's owner's manual or a trusted mechanic to determine the best course of action for your specific vehicle.
Why do mechanics say not to change transmission fluid?
That bad fluid may have a “sticky” quality to it or metal flecks that act to aid friction, and if it's changed, the new fluid might cause the transmission to start slipping.
Does your car drive better after a transmission flush?
After a transmission fluid flush, you may notice that your vehicle shifts smoother, and that your transmission operates better than before.
What is the downside of transmission flush?
Downsides of a Transmission Flush
For one, it's more expensive. And some people warn against performing a flush on a transmission using old, dirty fluid.
Can you change transmission fluid without flushing?
Indeed, changing your transmission fluid is very important maintenance. The problem with a transmission flush is how the service is being performed. Most car manufacturers recommend only draining your transmission fluid, and then refilling it.
How much should a full transmission flush cost?
Drivers can expect to pay $125 to $250 for a transmission fluid flush service. This is approximately twice as much as a transmission fluid change. This is due in large part to the additional fluid required. A flush will take 12 to 22 quarts, while a fluid change requires 5 to 7 quarts.
At what mileage should you get a transmission flush?
If you drive manual, most manufacturers will recommend changing your transmission fluid every 30,000 to 60,000 miles. If you have automatic, you can typically boost that range up to 60,000 to 100,000 miles.
Do mechanics recommend a transmission flush?
Many auto manufacturers suggest having an automatic transmission flushed once every 30,000 to 100,000 miles. For a manual transmission, it usually ranges from 30,000 to 60,000 miles.
Does your car run better after a transmission flush?
Having a transmission flush can help improve the way your vehicle runs and shifts, making your drives more comfortable and safer.
Why do transmissions fail after flush?
This is because excess build-up from contaminants and debris solidify and form a sludge. If too much sludge builds up in your transmission, and a transmission flush is performed, new fluid can cause stubborn sludge to loosen and cause damage to your transmission.
How do I know if I need a transmission flush or change?
Signs You Need A Transmission Flush
Other than the obvious check engine light, if you observe slipping gears, transmission whine, delayed shifting, or poor acceleration, then you might want to consider having the transmission fluid changed or perhaps even flushed.
