6.4 Powerstroke Transmission Fluid Capacity: A Guide to Proper Maintenance

6.4 Powerstroke Transmission Fluid Capacity

When it comes to maintaining your 6.4 Powerstroke engine, one crucial aspect that often gets overlooked is the transmission fluid. Properly maintaining the transmission fluid is essential for the smooth operation and longevity of your vehicle. In this article, we will discuss the transmission fluid capacity for the 6.4 Powerstroke engine and provide you with all the information you need to keep your transmission running smoothly.

Transmission Fluid Capacity and Type

Before we dive into the details, let’s start with the most important information: the transmission fluid capacity for the 6.4 Powerstroke engine. The table below provides the recommended transmission fluid capacity in both quarts and liters:

Transmission Fluid Capacity Quarts Liters
5R110W Transmission 17.5 16.6

Now that you know the transmission fluid capacity, let’s talk about the type of fluid you should use. For the 6.4 Powerstroke engine, it is crucial to use a high-quality automatic transmission fluid (ATF) that meets the Ford specification Mercon LV. Using the wrong type of fluid can lead to transmission damage and costly repairs, so make sure to use the recommended Mercon LV ATF.

How to Check and Add Transmission Fluid

Checking and adding transmission fluid to your 6.4 Powerstroke engine is a relatively straightforward process. Here are the steps you need to follow:

  1. Start by parking your vehicle on a level surface and engaging the parking brake.
  2. Locate the transmission dipstick, which is usually labeled and located near the back of the engine compartment.
  3. With the engine running and the transmission in “Park” or “Neutral,” remove the dipstick and wipe it clean with a lint-free cloth.
  4. Reinsert the dipstick fully and then remove it again to check the fluid level. The dipstick will have markings indicating the proper fluid level range.
  5. If the fluid level is below the recommended range, you will need to add fluid. Use a funnel to pour the Mercon LV ATF into the transmission through the dipstick tube. Be careful not to overfill, as it can cause damage to the transmission.
  6. Recheck the fluid level using the dipstick and add more fluid if necessary.
  7. Once the fluid level is within the recommended range, securely reinsert the dipstick and close the hood.

Remember, it is crucial to follow the proper safety precautions when working with transmission fluid. Avoid contact with your skin and eyes, and dispose of used fluid responsibly. If you are unsure or uncomfortable performing these steps, it is always best to consult a professional mechanic.


Now that you have all the information about the transmission fluid capacity for the 6.4 Powerstroke engine, you can ensure that your transmission stays in optimal condition. Remember to use the recommended Mercon LV ATF and regularly check and maintain the fluid level. By taking care of your transmission, you can enjoy smooth shifts and extend the life of your 6.4 Powerstroke engine.

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