Does Subaru recommend transmission flush or change?

Subaru recommends that owners follow the maintenance schedule outlined in their vehicle's owner's manual, which typically calls for a transmission fluid change rather than a flush. The automaker advises against performing a transmission flush, as it can potentially cause more harm than good to the vehicle's transmission system.

Subaru's Transmission Fluid Maintenance Recommendations

According to Subaru's guidelines, the transmission fluid in their vehicles should be changed at regular intervals, typically every 30,000 to 60,000 miles, depending on the model and driving conditions. This fluid change is a straightforward process that involves draining the old fluid and refilling the system with the recommended type and amount of new transmission fluid.

Subaru cautions against performing a transmission flush, which involves using a machine to forcibly circulate new fluid through the system and flush out the old fluid. While this may seem like a more thorough cleaning process, Subaru warns that it can actually dislodge built-up deposits and cause them to clog the transmission's internal components, leading to potential damage or failure.

Why Subaru Recommends Fluid Changes Over Flushes

• Preserves Transmission Components: Subaru's transmission systems are designed to operate with the specific type and amount of fluid specified in the owner's manual. A flush can disrupt the delicate balance of the transmission, potentially causing premature wear or damage to the internal components.


• Avoids Dislodging Deposits: Over time, small amounts of debris and deposits can accumulate in the transmission. A fluid change gradually removes these, while a flush can dislodge larger amounts, leading to clogging and other issues.


• Maintains Proper Fluid Levels: Subaru's recommended fluid change process ensures that the correct amount of new fluid is added, maintaining the proper levels and lubrication for the transmission.

By following Subaru's recommended maintenance schedule and opting for fluid changes rather than flushes, owners can help ensure the long-term health and performance of their vehicle's transmission system.

Why do people say not to flush transmission?

Don't flush the transmission. Just drain the fluid and refill. Flushing forces fluid through at pressures the transmission wasn't designed for and can cause damage to the transmission.

Does Subaru recommend transmission flush?

Subaru does not recommend a full transmission flush for its CVTs, but instead recommends a regular drain and fill service, especially under severe driving conditions. While a flush is sometimes recommended by dealers or third-party shops, it may not be necessary and could even be detrimental to some transmissions. A drain and fill is safer and sufficient for regular maintenance. 
Subaru's recommended maintenance

• CVT fluid replacement: Subaru recommends changing the CVT fluid at intervals such as 25,000 miles for severe duty or 30,000 to 40,000 miles under normal conditions. The specific interval will be in your owner's manual. 
• Drain and fill: This method is safer and is what Subaru generally recommends. A drain and fill removes a portion of the old fluid and replaces it with new fluid. This is often sufficient to keep the transmission in good health and avoids the risks of a flush. 
• Flush vs. drain and fill: A flush involves using a machine to force new fluid through the transmission to remove any remaining old fluid. However, some mechanics advise against this, especially on high-mileage transmissions, as it can sometimes loosen debris and damage seals. A drain and fill only removes the fluid that drains out by gravity, leaving some old fluid in the torque converter. 

When to consider a transmission service

• Check your owner's manual: The first step is to consult your owner's manual for the specific maintenance schedule for your vehicle. 
• Severe driving conditions: If you regularly drive in conditions such as heavy traffic, hilly terrain, dusty areas, or extreme temperatures, you should have the transmission fluid changed more frequently, even if your Subaru dealership recommends against it. 
• If you're buying a used car: If you have a used car with unknown maintenance history, it is highly recommended to change the transmission fluid. 

Important considerations

• Use the correct fluid: It is crucial to use the exact type of CVT fluid recommended by Subaru for your vehicle, as using the wrong fluid can cause damage. 
• Contact Subaru directly: If you are still unsure about the best service for your transmission, contact Subaru of America or a local Subaru dealer to ask for their recommendation. 

Note: A transmission flush is a more intensive service than a drain and fill. If you are not sure what to do, it is best to consult with a qualified technician or your local Subaru dealership.

Is it better to get your transmission fluid changed or flushed?

Flushed is better, it replaces all of the fluid. Drain and refill does not get the old fluid from the torque converter, coolers and cooler hoses.

How much is a transmission flush at Subaru?

The cost for a Subaru transmission fluid change, often called a "flush" or "exchange," can range from around $200 to over $600, depending on the type of service, where you get it done, and your specific model. A simple drain and fill is typically cheaper, while a full fluid exchange at a dealership can be more expensive. 
Factors influencing the cost

• Type of service: A "drain and fill" is usually less expensive than a full fluid exchange, which uses more fluid to clean out the system. For CVTs, a drain and fill only replaces about half the fluid, so many owners opt for a full exchange or multiple drain and fills to get the maximum benefit. 
• Service provider:
  • Dealerships: Tend to be more expensive, but use genuine OEM fluids and often have the highest level of trained technicians. 
  • Independent Subaru specialists: Often have lower labor rates, with some quoted prices around $300. 
  • DIY: The lowest cost option, with parts and fluids potentially costing around $180-$200, but requires mechanical knowledge. 
• Vehicle model: The cost can vary based on the specific model, year, and transmission type. Newer CVTs may require specialized fluids and procedures, increasing the cost. 

What to consider

• Check your owner's manual: Many modern vehicles do not have a dipstick, so it's important to follow the manufacturer's recommended service schedule.
• Ask what is included: Get a clear quote that details whether the service is a drain and fill or a full fluid exchange, what parts are used, and what labor is involved.
• Call around: Prices can vary significantly between different shops and dealerships. Get quotes from several locations to find the best price.