Should you flush a Subaru CVT transmission?
The short answer is that it is generally recommended to flush a Subaru continuously variable transmission (CVT) at regular intervals, typically every 30,000 to 60,000 miles, to maintain its optimal performance and longevity. Flushing the CVT fluid helps remove any built-up contaminants and ensures the transmission continues to operate smoothly.
Understanding Subaru CVT Transmissions
Subaru vehicles are equipped with a continuously variable transmission (CVT) instead of a traditional automatic transmission. CVTs use a belt or chain system to provide an infinite number of gear ratios, allowing for smooth and efficient power delivery. While CVTs offer several benefits, they also require specialized maintenance, including regular fluid flushes.
The Importance of Flushing a Subaru CVT
Flushing a Subaru CVT transmission is crucial for several reasons:
- Fluid Degradation: Over time, the CVT fluid can break down and become contaminated with metal particles, dirt, and other debris. This can lead to increased wear and tear on the transmission components, reducing its efficiency and lifespan.
- Wear and Tear: Without regular fluid changes, the CVT's internal components, such as the belt or chain, can experience accelerated wear, leading to potential failures and costly repairs.
- Manufacturer Recommendations: Subaru's recommended maintenance schedule typically calls for a CVT fluid flush every 30,000 to 60,000 miles, depending on the model and driving conditions. Adhering to these guidelines can help maintain the transmission's warranty and ensure optimal performance.
By flushing the CVT fluid at the recommended intervals, you can help extend the life of your Subaru's transmission and avoid costly repairs down the line.
How to Flush a Subaru CVT
Flushing a Subaru CVT transmission is best left to a professional mechanic or authorized Subaru service center. The process involves draining the old fluid, replacing the filter (if applicable), and refilling the transmission with the correct type and amount of new CVT fluid. This ensures the transmission is thoroughly cleaned and the new fluid is properly circulated throughout the system.
It's important to use the specific CVT fluid recommended by Subaru, as using the wrong type of fluid can damage the transmission. Attempting to flush the CVT yourself without the proper knowledge and equipment can also lead to issues, so it's generally advisable to have a professional handle this maintenance task.
What is the downside of transmission 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 much should a CVT flush cost?
On average, you can expect to pay between $350 to $400 for a CVT fluid change in the United States. This price range takes into account various factors such as the type of vehicle, location, and the specific dealership or service center you choose.
How long will a CVT transmission last in a Subaru?
There is a fair chance your Subaru CVT will last well beyond 60,000 miles as long as you stick to the factory-recommended maintenance schedule and take care not to overfill your transmission fluid.
Can a CVT transmission last 300000 miles?
Despite their durability, Honda CVTs can encounter issues; however, with proper care, they can help owners exceed 300,000 miles on their vehicles.
What years did Subaru have CVT problems?
The models and years that were affected mainly by transmission issues are:
- Crosstrek, 2013 – 2015.
- Crosstrek Hybrid, 2014 – 2015.
- Forester (2.0 and 2.5 liter engines), 2014 – 2015.
- Impreza, 2012 – 2015.
- Legacy, 2010 – 2015.
- Legacy 3.6L V6, 2015.
- Outback, 2010 – 2015.
- Outback 3.6L V6, 2015.
How to care for a Subaru CVT transmission?
The only regularly scheduled maintenance a Subaru CVT transmission requires routinely is an inspection of the fluid.
Does Subaru CVT transmission fluid need to be changed?
Follow Subaru's Recommendations
Subaru often suggests changing the transmission fluid at regular intervals, such as every 30,000 to 60,000 miles, depending on the model and transmission type.
How do I know if my CVT transmission fluid needs replacing?
Other than the dreaded check engine light, if you observe delayed shifting, poor acceleration, slipping gears, or transmission whine, then you should consider having your transmission fluid changed or maybe even flushed.
What happens if CVT fluid is not changed?
Apart from overheating, old transmission fluid can lead to a buildup of sludge and debris that creates clogs. This not only further reduces the efficiency of the transmission but can lead to erratic shifting, delayed gear engagement, and in severe cases, total transmission failure.
Is it good to flush a CVT transmission?
A CVT doesn't need to be flushed like a traditional automatic transmission. It's essentially a chain in a oil bath. It doesn't contain all the passageways, gears, drums, bands, servos, etc that contamination can accumulate & need to be flushed from.
