6.4 Powerstroke Oil Capacity and Fluid Capacity – with Specs

The Ford 6.4L powerstroke has an engine oil capacity of 15 quarts or 14.2 liters and the specification for that is API CJ-4.

  • 2008 6.4 powerstroke oil capacity 15 quarts or 14.2 liters.
  • 2009 6.4 powerstroke oil capacity 15 quarts or 14.2 liters.
  • 2010 6.4 powerstroke oil capacity 15 quarts or 14.2 liters.

The coolant capacity is 30.6 quarts or 29 liters and the standard is WSS-M97B55-A. It has a 2 quarts or 1.9 liters transfer case fluid capacity, 3 quarts or 2.8 liters power steering fluid capacity 17.5 quarts or 16.6 liters automatic transmission fluid capacity, and 5.8 quarts or 5.5 liters manual transmission fluid capacity.

That’s not all. If you want to know more about 6.4L Powerstroke fluid and engine oil capacity & specs, give this guide a go! Here, we’ve broadly discussed the fluid/oil capacity and specs of the most crucial components.

Go through, you’ll thank us later.

Key Takeaways:

  • The 6.4L powerstroke has an engine oil capacity of 15 quarts and requires an oil change every 5,000 to 10,000 miles depending on riding condition.
  • It requires 17.5 quarts of automatic transmission fluid and 5.8 quarts of manual transmission fluid.
  • This engine can take up to 30.6 quarts of coolant fluid and requires a fluid change every 100,000 miles.
  • The power steering fluid capacity is 3 quarts and the transfer case fluid capacity is 2 quarts.
  • Depending on the vehicle model, the fuel tank capacity is either 30 gallons or 38 gallons.

Ford 6.4 Liter Powerstroke Engine Oil and Fluid Capacity & Specs: At a Glance

Oil/FluidCapacitySpecsRecommended Service IntervalSuggestion
Engine Oil15 quarts or 14.2 liters● SAE 15W-40 for temp over 20 degrees

● SAE 10W-30 for temp over -0 degrees

● SAE 5W-40 for temp over -20 degrees
● Every 10,000 miles under normal conditions.

● Every 5,000 miles or 6 months under severe duty conditions (whichever comes first).
● Any high-grade oil that meets Ford’s standard (API CJ-4) will do fine.

● However, experts recommend using Blue and Green Diamond PAO synthetic engine oil.
Transmission Fluid Automatic: 17.5 quarts or 16.6 liters

Manual: 5.8 quarts or 5.5 liters
● Motorcraft Automatic Transmission Fluid Mercon SP

● Motorcraft Mercon V
Automatic Transmission: Every 30,000 miles.

Manual Transmission: 100,000 miles.
Ford’s transmission fluid standard is WSS-M2C949-A. Therefore, for better efficiency, make sure the oil meets the standard.
Engine Coolant30.6 quarts or 29 litersFord Premium gold engine coolant with a bittering agent.Every 100,000 miles.Ford’s specification for engine coolant is WSS-M97B57-A2. And they recommend using antifreeze coolants.
Power Steering Fluid3 quarts or 2.8 litersMotorcraft Automatic Transmission Fluid Mercon VEvery 5,000 miles.
Transfer Case Fluid2 quarts or 1.9 litersMotorcraft Transfer Case Fluid● Every 150,000 miles under normal conditions.

● Every 60,000 miles under severe duty.
● Every 150,000 miles under normal condition

● Every 60,000 miles Under the severe duty
Front Differential Dana 50: 1.9 quarts or 1.8 litersSAE
75W-90 Synthetic
● Every 50,000 miles under normal operation.

● Every 150,000 under severe duty operation.
WSS-M2C942-A is Ford’s specifications for both front and rear differentials.

[Fill to Plug]
Dana 60: 2.9 quarts or 2.7 litersSAE 80W-90 gear oil/SAE 90W hypoid oil[Same as above][Same as above]
Dana S60: 3.25 quarts or 3.1 liters● 75W-140 Synthetic

● 80W-90 Mineral
[Same as above][Same as above]
Rear DifferentialSterling 10.50”: 3.5 quarts or 3.3 litersSAE 75W-140 Full Synthetic● Every 50,000 miles under normal operation.

● Every 150,000 under severe duty operation.
WSS-M2C942-A is Ford’s specifications for both front and rear differentials.

[Up to the Edge of the Bolt Hole]
Dana 80: 4.25 quarts or 4.0 litersSAE 75W-90 Full Synthetic[Same as above][Same as above]
Dana S110/S130: 7 quarts or 6.6 litersSAE 80W-90[Same as above][Same as above]
Dana S135: 12 quarts or 11.4 litersSAE 80W-90[Same as above][Same as above]
Air Conditioner Refrigerant1.70 lbsR-134ADepends on the usage.The refrigerant oil should meet WSH-M1C231-B specifications. 
Windshield Washer Fluid4.25 quarts or 4.0 litersMotorcraft Premium Windshield Washer Concentrate FluidDepends on the usage. Windshield washer fluid needs to be mixed with water. The typical ratio is 50:50. Check Ford’s instruction manual for the exact ratio. 
Fuel● F250 / F350 6.75 ft Bed Len: 30 gallons

● F250 / F350 8 ft Bed Len: 38 gallons
Ultra-low sulfur dieselDepends on usage.● Under normal weather, experts recommend using Everyday diesel treatment.

● And Diesel winter anti-gel in cold weather.

● Using these can increase fuel mileage and lubricity.

An Extensive Tour to Ford 6.4L Powerstroke Engine Oil & Fluid – Capacity, Specs & More

Went through the chart? Want to get into details now? Hop right in! Along with the capacities, and service interval, we’ve covered the specifications, viscosities, and even some recommended fluids too.

Go through, you’ll be able to dodge most of the 6.4L power stroke problems that happen due to inadequate or low-quality fluids.

● 6.4 Powerstroke Engine Oil

As you know, an engine consists of many metal parts that are continuously rubbing against each other. And the engine oil is what lubricates these metals and ensures smooth movement eliminating the wear and tear.

The 6.4l powerstroke diesel engine has an oil capacity of 15 quarts or 14.2 liters and that includes the oil used in the filter too. If you want the very best for the engine then it’s a must that you only use oil that meets the Ford’s specification which is API CJ-4.

It’s recommended to use SAE 10W-30 viscosity super duty diesel motor oil when the temperature is above -0 degrees F. And SAE 15W-40 when the temperature is over 20 degrees F. For temperature above -20 degrees F, you can use 5W-40 viscosity oil.

The manufacturer also recommends using Motorcraft engine oils, if that’s not available then any other oil that’s similar in terms of quality. Some experts suggest using the Blue Diamond PAO Synthetic Oils too.

Using the recommended oil can increase the life expectancy of the engine.

The ideal oil change interval for 6.4l powerstroke would be between 9,000 – 10,000 miles. That being said, if the vehicle has been ridden heavily on even or uneven terrains, in that case, oil change is suggested every 5,000 miles or 6 months (whichever comes first).

● 6.4 Powerstroke Transmission Fluid

The transmission fluid capacity of this 6.4-liter powerstroke varies depending on the year it was made and the model of the vehicle.

There are two types of transmission systems in 6.4l Powerstroke: manual and automatic transmission. Both these types have different fluid capacities.

Automatic Transmission Fluid: Usually, the 6.4-liter powerstroke is paired with 5-speed torqshift automatic transmission and it has a capacity of 17.5 quarts or 16.6 liters. The manufacturer recommends using MotorcraftMercon SP ATF.

Manual Transmission Fluid: The manual transmission fluid capacity of this engine is 5.8 quarts or 5.5 liters. And the suggested fluid is MotorcraftMercon V.

The manufacturer recommends changing the automatic transmission fluid after 30,000 miles. And the manual transmission after 100,000 miles.

● 6.4 Powerstroke Engine Coolant

The engine coolant capacity of the 6.4L powerstroke is 30.6 quarts or 29 liters. And to ensure top-notch performance Ford suggests using coolant that meets their standard which is WSS-M97B55-A.

Motorcraft premium gold engine coolant can be used in 6.4l powerstroke since it meets the standard. Plus, the way this coolant is designed it can protect the engine from corrosion and increase the lifespan.

The manufacturer recommends the initial coolant change after 100,000 miles or six years (whichever comes first). And after that, the coolant should be replaced every 50,000 miles or 3 years (whichever comes first).

● 6.4 Powerstroke Power Steering Fluid

Without proper power steering fluid, turning steering will be a sweaty task. The 6.4L powerstroke has 3 quarts or 2.8 liters of power steering fluid capacity. And Ford recommends using Motorcraft Mercon V Fluid, as it not only smoothens the steering movement but also protects the system.

● 6.4 Powerstroke Transfer Case Fluid

As the name suggests, the transfer case is responsible for transferring power from the transmission to front and rear axles. The transmission case has its own fuel system and the capacity varies depending on the vehicle’s year and model. However, typically the capacity is between 2 to 3 quarts.

The standard capacity is 2 quarts or 1.9 liters.

With time the fluid gets contaminated with debris, dirt, and other contaminants. This is why the manufacturer recommends changing the fluid every 30,000 to 50,000 miles.

Read Our Another Article On: P2263 Code 6.4 Powerstroke Engine

● 6.4 Powerstroke Differential Fluid

There are two differentials: front and rear. The differential fluid capacity depends on the model and year of the vehicle. Plus, it depends on the different differential types as well.

At first, you must determine what kind of differential is used on your truck (Ford F-250, F-350, F-450, F-550) model year.

❖ The Front Differential Fluid:

Usually, in a 6.4 liter powerstroke the front differential fluid capacity is 2.9 quarts or 2.8 liters. And the recommended viscosity for the front differential is SAE 80W-90.

The front differential fluid capacities are:

  • Dana 60 Front Axle: 2.9 quarts or 2.7 liters.
  • Dana S60 Front Axle: 3.25 quarts or 3.1 liters.
  • Dana 50 Front Axle: 1.9 quarts or 1.8 liters.

Recommended viscosity for front differentials:

  • Dana 60 Front Axle: SAE 80W-90 gear oil/SAE 90W hypoid oil.
  • Dana S60 Front Axle: 75W-140 Synthetic or 80W-90 Mineral.
  • Dana 50 Front Axle: SAE 75W-90 Synthetic.

❖ The Rear Differential Fluid:

The rear differential fluid capacities are:

  • 10.50” Sterling Axle: 3.5 quarts or 3.3 liters.
  • Dana 80 Rear Axle: 4.25 quarts or 4.0 liters.
  • Dana S110/S130 Rear Axle: 7.0 quarts or 6.6 liters.
  • Dana S135 Rear Axle: 12 quarts or 11.4 liters.

Recommended viscosity for rear differentials:

  • 10.50” Sterling Axle: SAE 75W-140.
  • Dana 80 Rear Axle: SAE 75W-90.
  • Dana S110/S130 Rear Axle: SAE 80W-90.
  • Dana S135 Rear Axle: SAE 80W-90.

● 6.4 Powerstroke Windshield Washer Fluid

The windshield capacity of 6.4l Powerstroke varies depending on different models. Typically, the capacity is around 4.25 quarts or 4.0 liters, look into the instruction manual for the exact capacity.

Experts recommend using Motorcraft premium windshield washer concentrate fluid, if that’s not an option, you can use any equivalent oil.

Usually, people mix water with the windshield washer fluid, and the typical ratio is 50:50. However, ask an expert or check the user manual for the exact ratio for your vehicle.

● 6.4 Powerstroke Fuel Capacity, MPG & Specs

The fuel capacity of Ford’s 6.75 ft. bed Len super-duty truck is 30 gallons and the 8 ft. bed Len super-duty truck’s fuel capacity is 38 gallons. The fuel economy of both these trucks is pretty much the same, 14-16 miles per gallon in the city and 17-19 miles per gallon on the highway.

The 6.75 ft. truck will go between 460 to 540 miles with a full tank. And the 8 ft. truck will go around 540 to 740 miles.

Treatments are necessary, as they increase overall fuel efficiency. Experts recommend using Everyday diesel treatment under normal conditions. And Diesel winter anti-gel under cold conditions.

VehicleFuel CapacityCity MPGHighway MPG
Ford Super Duty Truck: 6.75 ft. Bed Len (Short Bed)30 gallons14-16 miles per gallon17-19 miles per gallon
Ford Super Duty Truck: 8 ft. Bed Len (Long Bed)38 gallons11-14 miles per gallon15-18 miles per gallon


Ford 6.4 Liter Power Stroke Diesel Engine is a powerful engine and to get the best out of it, providing an adequate amount of oil and fluid is a must. And if you’ve gone through the guide, you’ve definitely learned a lot about the 6.4L Powerstroke fluid and oil capacity & specs. Follow the guideline, the wheels should be spinning as they should.

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