Does a Subaru transmission have a filter?

Yes. Subaru automatic transmissions, including their Lineartronic CVTs, generally include a filter or screen to trap debris, while most manual transmissions do not have a traditional fluid filter.

The exact design and service needs vary by model and generation. Filters can be located in the transmission pan for traditional automatics or exist as internal screens within CVTs. Maintenance typically involves a pan service with the appropriate fluid and, when applicable, replacement of the filter.

Transmission types and filter presence

Below is a quick guide to the main Subaru transmission designs and whether they include a filter.

• Manual transmissions (6- or 5-speed, depending on model): generally do not include a dedicated fluid filter. Debris management relies on the gear sets and synchronizers rather than a replaceable filter.


• Traditional automatics (4EAT/5EAT): typically incorporate a fluid filter or screen within the transmission, usually serviced during a pan drop or gasket replacement.


• Lineartronic CVT (Subaru CVT): contains an internal filter/screen to protect the CVT components; service may involve replacing the filter during a pan service or other CVT-specific service as specified by the model.

Conclusion: If you own a Subaru with an automatic or CVT, expect a filter or screen as part of the transmission’s fluid system; manuals generally do not have a dedicated filter. Always verify with your model’s manual or a dealer for exact service instructions.

Filter location and service considerations

Where the filter lives and how it’s serviced varies by transmission type. Here are the common patterns you’ll encounter.

• In most traditional automatics, the filter is integrated into the transmission pan area and accessed during a pan drop with a new gasket and fluid replacement.


• In Lineartronic CVTs, the CVT fluid filter is typically internal; some models employ a pan filter as part of the service, while others require a dedicated CVT service procedure.


• For any Subaru transmission, always use the recommended transmission fluid (OEM fluids or equivalents) and follow the service interval specified by your vehicle's year and model.

Concluding note: Filter service is model-specific. When in doubt, rely on service manuals or authorized Subaru technicians to determine whether a filter should be replaced during your next service visit.

Maintenance tips for Subaru transmissions

To keep your Subaru’s transmission in good shape and to make sure any filter-related service is done correctly, consider these guidelines.

• Always consult the owner's manual or a Subaru service bulletin for your exact model/year before performing transmission work.


• For automatics with a pan filter, plan a pan drop with gasket replacement and filter replacement when scheduled by the manual.


• For Lineartronic CVTs, follow Subaru’s recommended service approach, and avoid using non-approved fluids or flushes unless explicitly instructed.


• Use the correct transmission fluid specification and ideally perform service at a facility familiar with Subaru transmissions to avoid potential damage.

Summary: Subaru transmissions generally include a filter or screen in automatics and CVTs, while manuals typically do not. Service and access depend on the model—check the owner's manual or consult a trusted technician for model-specific guidance.

Summary

In short, Subaru automatic transmissions and CVTs do have filters or screens to protect the gear systems, but not all transmissions share the same design. Manual transmissions usually lack a dedicated fluid filter. For the most accurate guidance, reference your model’s service manual or consult a Subaru dealer or certified technician.

Is there a filter in a Subaru CVT transmission?

On TR580 CVT there is a filter, but according to Mr. Subaru YouTube videos it requires cracking open both halves of the CVT case which we aren't going to do. It appears that Subaru intended the filter to be changed only in a teardown Situation. Subaru only recommends a drain and fill service.

Is it necessary to change the transmission filter when changing transmission fluid?

However, ideally, you'll want to change your filter before any of these problems come up. Keeping that in mind, it's recommended that you change your transmission filter whenever you have to perform a transmission fluid change. Usually, your owner's manual will inform you when you need to do this.

Does the Subaru Outback have a transmission filter?

Subaru Outback Transmission Filter
Your Subaru Outback will also contain a gasket, pickup tube, and rubber seal which may all need to be replaced along with the filter. Your Subaru Outback transmission filter will need to be replaced each 30,000 or 50,000 miles.

What are symptoms of a clogged transmission filter?

Symptoms of a clogged transmission filter include erratic and delayed shifting, slipping gears, unusual noises like whining or buzzing, a burning smell, and a transmission overheating. You may also notice leaking transmission fluid or the check engine or transmission warning light on the dashboard.
 
Shifting problems 

• Delayed or erratic shifting: The transmission hesitates or takes longer to shift into gear. 
• Slipping gears: The transmission may slip out of gear, and the engine RPMs may increase without the vehicle accelerating. 
• Rough shifts: Shifting feels jerky or harsh. 

Unusual sounds and smells 

• Whining, buzzing, or grinding noises: These noises can occur because the transmission pump is working harder to circulate fluid through the blockage. 
• Burning smell: The transmission can overheat due to poor fluid circulation, leading to a burning odor. 

Fluid and warning signs

• Dark or dirty transmission fluid: Healthy fluid is bright red; dark, gritty, or murky fluid is a major warning sign. 
• Fluid leaks: Increased pressure from a clogged filter can cause leaks, often a reddish fluid under the vehicle. 
• Dashboard warning lights: The check engine light or a specific transmission warning light may come on. 

Other symptoms

• Transmission overheating: Insufficient fluid flow can cause the transmission to overheat. 
• Reduced performance: The vehicle may feel sluggish or lose power.