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Do you check Subaru transmission fluid with the car running?

Checking the transmission fluid in your Subaru is an important maintenance task that should be done regularly to ensure the proper functioning of your vehicle. The process involves checking the fluid level and condition while the engine is running, as this provides the most accurate reading. Here's a detailed guide on how to check your Subaru's transmission fluid.


Preparing to Check the Transmission Fluid



  • Park your Subaru on a level surface and apply the parking brake.

  • Allow the engine to run for at least 2-3 minutes to warm up the transmission fluid.

  • Locate the transmission fluid dipstick, which is usually located near the front of the engine compartment.


Warming up the transmission fluid is crucial, as it ensures an accurate reading of the fluid level. The fluid should be at operating temperature for the most reliable results.


Checking the Transmission Fluid Level



  • With the engine running, pull out the dipstick and wipe it clean with a lint-free cloth.

  • Reinsert the dipstick all the way back into the transmission and then pull it out again.

  • Check the fluid level on the dipstick. The level should be between the "MIN" and "MAX" markings.

  • If the level is low, add the recommended transmission fluid in small increments until the level is within the proper range.


Be sure to use the correct type of transmission fluid specified by Subaru for your vehicle model. Using the wrong fluid can damage the transmission.


Checking the Transmission Fluid Condition



  • Inspect the color and consistency of the transmission fluid on the dipstick.

  • The fluid should be a clear, reddish-pink color and have a smooth, consistent texture.

  • If the fluid appears dark, burnt, or has a burnt smell, it may be time to have the transmission serviced.


Regularly checking and maintaining the transmission fluid in your Subaru is crucial for the long-term health and performance of your vehicle's transmission. By following these steps, you can ensure your Subaru's transmission is operating at its best.

Do you check Subaru transmission fluid while running?


ATF must always be checked with engine running. When engine is off all the fluid ``drains'' back into pan and shows high on dipstick. With engine running the fluid is flowing thru all the parts of trans. and will show the actual operating level.



Do you check CVT fluid with engine running?


Let engine warm up and continue to run throughout operation unless vehicle's owner's manual says otherwise.



How to check Subaru fluids?


Park your Subaru on a level surface and stop the engine. Pull out the dipstick, wipe it clean, and insert it again until it stops. Pull out the dipstick again and check the oil level on it. If it is below the lower level, add oil to bring it up to the upper level.



What are symptoms of low transmission fluid?


If your gears are slipping, it's a clear sign your car's running low on transmission fluid. When experiencing sudden up and down shifts, high RPMs right before shifting, or erratic shifting, seek assistance from your local service center to prevent your transmission from overheating or becoming damaged.



How long to let a car run before checking transmission fluid?


If the car is checked while the engine is cold, it might give an inaccurate reading when you use the dipstick. After driving for about 10 minutes, park on an even surface and leave it running. Shift through the gears and give the transmission the opportunity to spend a few seconds in each gear range.



What are the symptoms of low transmission fluid?


In the meantime, it's a good idea to familiarize yourself with the tell-tale signs that you may be low on transmission fluid.

  • Noises.
  • Burning Smell.
  • Transmission Leaks.
  • Slipping Gears.
  • Slow Gear Engagement.
  • Vehicle Accelerates Poorly.
  • Check Engine or Transmission Warning Light Is On.



How do I know if my Subaru transmission is bad?


Identifying Subaru Transmission Failure
Delayed or rough gear shifting. Unusual noises, such as grinding, whining, or clunking.



Do you check transmission fluid while running or off?


To check the transmission fluid level, it is generally recommended to do so with the engine running and warmed up. Here's a step-by-step guide:



Do I check the oil with my car on or off?


Answer. We recommend checking the oil level either before turning on the engine or 5 to 10 minutes after shutting down so you can have all the oil in the oil pan to get an accurate measurement.



Does my car need to be running when I put transmission fluid in?


Your car's engine should be running when you add fluid to the transmission, but you should have the transmission in park and the handbrake activated for safety. Check the owner's manual for instructions on selecting the correct transmission fluid for your vehicle.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.