To change the transmission fluid in a Subaru WRX, drain the old fluid, replace the filter, and refill with new fluid. This process generally requires professional knowledge or a detailed guide.

Changing the transmission fluid in your Subaru WRX is a vital task that helps to maintain the performance and longevity of your vehicle’s transmission system. Typically, Subaru recommends a transmission fluid change every 30,000 to 60,000 miles, but you should always consult your owner’s manual for model-specific intervals.

Proper maintenance of your transmission fluid keeps gear shifts smooth and can prevent costly repairs down the line. Seeking the expertise of a certified mechanic is often advisable, as they have the necessary tools and experience.

For those with mechanical experience and confidence, performing a transmission fluid change at home is possible with the right preparation and careful adherence to Subaru’s guidelines.

Regular checks of your transmission fluid level and condition can alert you to the need for a maintenance service before more significant issues arise.

Step-by-step Guide To Changing Subaru Wrx Transmission Fluid

Maintaining your Subaru WRX includes ensuring its transmission fluid is clean and fresh. A transmission fluid change is a proactive measure that keeps your vehicle’s gearbox running smoothly.

Here’s a thorough guide to help you execute a transmission fluid change with precision and efficiency.

Gather Necessary Tools And Materials

Before beginning the fluid change process, you’ll want to gather the right tools and materials. Ensure you have the following:

  • Jacks and jack stands to lift and support the car.
  • Socket set for removing bolts.
  • Drain pan to catch the old transmission fluid.
  • Funnel to pour new fluid without spillage.
  • New transmission fluid specific to your WRX model.
  • Gloves and safety glasses for protection.
  • Shop rags for cleanup and handling of parts.

Locate And Access Transmission Fluid Fill And Drain Locations

Securely lift your WRX and locate the transmission drain and fill plugs. Typically, the fill plug is located on the side of the transmission, while the drain plug is at the bottom.

Remove the fill plug first to ensure there’s proper ventilation when draining the fluid later on.

Draining The Old Transmission Fluid

Place the drain pan under the transmission drain plug, then carefully remove the plug. Allow the fluid to completely drain out. This might take a few minutes, as you want to ensure as much of the old fluid as possible is removed.

Replacing The Transmission Filter (optional)

Some models may have a serviceable transmission filter. If applicable, this is the perfect time to replace it. Refer to your Subaru WRX’s manual to determine whether this step is necessary and to find the filter’s exact location.

Refilling The Transmission With New Fluid

Once the old fluid is drained and the plug reinstalled, introduce new transmission fluid through the fill plug using a funnel. Pour in the type and amount recommended by Subaru for your specific WRX model. Do not overfill as this can lead to additional problems.

Testing And Verifying Proper Fluid Level

Reinsert the fill plug and start the engine, allowing it to warm up. Cycle through the gears to distribute the fluid, then turn off the engine. Check the fluid level according to the procedure outlined in the owner’s manual, making sure it’s within the correct range.

Add more fluid if necessary, and always look for leaks under the vehicle after performing this maintenance task.

Tips And Recommendations

Welcome to our segment on Tips and Recommendations for changing your Subaru WRX transmission fluid. Proper maintenance of your vehicle’s transmission is vital for its performance and longevity.

Here, we’ll provide you with valuable insight to help you manage your car’s transmission fluid with confidence. These tips will ensure that your WRX runs smoothly and that its transmission remains in peak condition.

Consulting The Subaru Wrx Owner’s Manual

The Subaru WRX owner’s manual is your go-to resource for precise information about your vehicle’s needs. It contains specifications for the type of transmission fluid your WRX requires and the recommended change intervals.

Always refer to this manual prior to starting the fluid change process to avoid any errors that could harm your vehicle’s transmission.

Using The Correct Type Of Transmission Fluid

Selecting the right transmission fluid is crucial for the health of your Subaru WRX’s transmission. Using an incompatible fluid can lead to poor performance and even costly damage.

It’s imperative to check your owner’s manual for the manufacturer’s specifications or consult with a trusted automotive professional to ensure you use the correct fluid.

Checking The Transmission Fluid Periodically

Regular checks of the transmission fluid can alert you to potential issues before they escalate. It’s essential to monitor the fluid level and its condition. Look for signs of contamination or degradation.

If the fluid appears dark, dirty, or has a burnt smell, it may be time for a change. Use the dipstick to ensure the fluid level is within the safe operating range, adding more if necessary.

Seeking Professional Help If Unsure Or Uncomfortable

If you’re hesitant about changing the transmission fluid yourself or have concerns about the process, don’t hesitate to seek help from a professional mechanic.

A trained technician can carry out the service efficiently and safely, giving you peace of mind. They can also inspect the transmission for any potential issues, allowing for timely repairs and maintenance.

Frequently Asked Questions

How Often Do You Change The Transmission Fluid In A Wrx?

Change the transmission fluid in a WRX every 30,000 to 60,000 miles, but always check the owner’s manual for specific intervals.

How Much Does It Cost To Change Transmission Fluid On A Wrx?

The cost to change transmission fluid in a WRX typically ranges from $150 to $250, depending on the service provider and location.

When Should Subaru Transmission Fluid Be Changed?

Subaru recommends changing transmission fluid every 30,000 to 60,000 miles. Check your owner’s manual for your specific model’s service interval. Regular maintenance ensures optimal performance and longevity.

When Should I Change Differential Fluid Subaru Wrx?

Change your Subaru WRX differential fluid every 30,000 to 60,000 miles to maintain optimal performance. Consult your owner’s manual for specific recommendations.


Regular maintenance, including the timely replacement of your Subaru WRX’s transmission fluid, is key to the vehicle’s longevity and performance.

By following the steps outlined, you ensure a smoother ride and potentially avoid costly repairs. So, remember to check your owner’s manual, gather the right tools, and give your WRX the care it deserves.

Keep shifting gears effortlessly, and enjoy every journey on the road ahead.