How much coolant does a 6.7 powerstroke hold?
About 32–34 quarts (8.0–8.5 gallons) of coolant in total for the full cooling system, depending on year and configuration.
For context, the 6.7L Power Stroke diesel used in Ford Super Duty pickups relies on a closed cooling system that includes the engine block, cylinder heads, radiator, heater core, hoses, and the coolant reservoir. Exact capacity can vary by model year, whether the heater core is counted, and any optional equipment such as a block heater. The figures below reflect typical published capacities and serve as a practical guide for maintenance and flushes.
What counts toward capacity
Cooling-system capacity refers to the total volume of fluid the system can hold when all hoses and components are at normal levels. Some references quote the full system capacity (heater core included), while others break out the engine block/radiator portion separately from the heater core.
Estimated capacities by configuration
Use these figures as a baseline for planning a coolant flush or refill. Actual values should be confirmed with Ford service data for your exact VIN/year.
- The full cooling system (heater core included): approximately 33 quarts (about 8.25 gallons).
- Engine block and radiator portion (excluding heater core): about 24–26 quarts (6–6.5 gallons).
- Typical practical fill for a complete service is around 32–34 quarts (8.0–8.5 gallons) when including the reservoir and hoses.
When performing a coolant flush or replacement, use the exact capacity listed in your vehicle’s service manual or by Ford's data for your VIN, since variations may occur with options like a block heater or a more complex radiator circuit.
How to verify capacity for your vehicle
To ensure you fill to the correct level on your specific truck, cross-check the official Ford documentation for your model year and configuration, or consult the latest service bulletin based on your VIN. The steps below outline a practical approach that mirrors typical maintenance procedures.
- Locate the correct capacity specification for your year and trim in the owner’s manual or Ford service data by VIN.
- Drain the old coolant completely following the service manual’s procedure, then flush if required.
- Refill using the recommended coolant type (usually a long-life OAT coolant meeting Ford WSS-M97B44-D2 or equivalent) until you reach the full system capacity for your configuration.
- Run the engine with the heater on high, top off as required, and recheck for air pockets at the recommended interval.
Note that variants like a block heater or additional aftermarket equipment can alter capacity. Always verify with official documentation for your exact vehicle configuration.
Additional considerations for coolant type and maintenance
Ford typically recommends a long-life coolant meeting the OEM specification with the appropriate mix (often 50/50 with distilled water). Using the wrong coolant or incorrect ratio can affect cooling efficiency and corrosion protection. Refer to your owner’s manual for the recommended coolant type and service intervals.
Summary
For most 6.7 Power Stroke applications, you should expect about 32–34 quarts (8.0–8.5 gallons) of coolant in total, with the exact figure varying by year and equipment. To ensure accuracy, consult Ford’s service data for your VIN and follow the recommended coolant type and mixing ratio. Regular checks and proper bleeding of air pockets help maintain optimal cooling performance and engine health.
How much coolant does a 2013 F350 6.7 take?
Coolant: 29.4-30.3 quarts for the 2011-2016 models and 31.7 -35.1 quarts for 2017-2020.
How many quarts of coolant does a 6.7 powerstroke take?
The 6.7L Powerstroke engine has two separate cooling systems: the primary system has a capacity of approximately 31.7 quarts (30 liters) for the engine, and the secondary system (for components like the EGR cooler and intercooler) has a capacity of around 8.1 quarts (7.7 liters). However, some sources list different capacities, with a primary capacity of up to 35.1 quarts (33.2 L) and a secondary capacity of up to 15.1 quarts (14.3 L) depending on the model year, so it is always best to check your specific vehicle's owner manual.
Primary cooling system
- Engine coolant: Approximately 31.7 quarts (30 liters).
- Note: Some model years may require up to 35.1 quarts (33.2 L).
This video demonstrates how to perform a complete coolant flush and refill on the 6.7L Powerstroke engine: 59sMotor HeadYouTube · Jun 20, 2025
Secondary cooling system
- Engine coolant: Approximately 8.1 quarts (7.7 liters).
- Note: Some model years may require up to 15.1 quarts (14.3 L).
- Purpose: This system often cools the EGR cooler and intercooler.
You can watch this short video to learn about the two separate cooling systems in the 6.7L Powerstroke engine: 55sFlying WrenchesYouTube · Oct 30, 2023
Important considerations
- Model year variation: Coolant capacities can vary by year, so always consult your specific owner's manual for the most accurate information.
- Two systems: The 6.7L Powerstroke has two separate cooling circuits, each with its own capacity and pumps.
- Coolant type: Always use the specified coolant type, such as Motorcraft Orange Coolant (prediluted) VC-3DIL-B, for 2015-2019 models.
How many gallons does a 6.7 powerstroke hold?
A 6.7 Powerstroke's fuel tank capacity varies, but it can be around 29 to 48 gallons for standard models or larger like 60 gallons for crew cab/short bed configurations. The engine also uses a separate 5 to 7.5-gallon tank for Diesel Exhaust Fluid (DEF), which is critical for emissions and must be refilled separately.
Fuel tank capacity
- Standard tanks: Typically range from 29 to 48 gallons, depending on the truck's configuration like the wheelbase and bed length.
- Aftermarket and larger options: Some trucks can be fitted with replacement tanks that offer capacities of 60 gallons or more.
Diesel Exhaust Fluid (DEF) tank
- Standard capacity: The separate DEF tank is usually about 5 gallons, with some models using a larger 7.5-gallon tank.
- Importance: The DEF system is essential for reducing emissions. If the DEF tank runs out, it can trigger a "limp mode" or prevent the engine from starting.
Oil capacity
- Engine oil: The 6.7 Powerstroke engine takes approximately 15 quarts (14.2 gallons) of oil.
What coolant is recommended for a 6.7 powerstroke?
The correct coolant for a 6.7L Powerstroke is a Ford-specific yellow or orange ethylene glycol-based antifreeze/coolant, which meets the specification WSS-M97B44-D2. While Ford initially specified an orange coolant, they now use a newer yellow coolant, which is backward-compatible. For a complete flush, use a 50/50 mixture of the concentrated coolant and distilled water.
This video explains the coolant change process for a 6.7L Powerstroke: 1mHelp Me DIYYouTube · Dec 28, 2022
Coolant type
- Ford specification: Use either the Motorcraft Orange Prediluted Antifreeze/Coolant or the newer yellow concentrated antifreeze/coolant.
- Backward compatibility: The newer yellow coolant is designed to be backward compatible, so it's okay to add it to a system that previously had orange coolant.
- Avoid mixing: Do not mix different types of coolants without thoroughly flushing the system.
Mixing and dilution
- Concentrated formula: If you use a concentrated coolant, mix it with distilled water to create a 50/50 solution before adding it to the system.
- Prediluted formula: If you use a prediluted coolant, it is already mixed at the correct ratio and does not require additional water.
- Avoid tap water: Always use distilled water for mixing, as tap water can cause deposits and corrosion.
This video explains the difference between various Ford coolants: 59sYukonYouTube · Feb 6, 2024
Other options
- Other brands: You can use any coolant that meets Ford's specifications, such as Zerex G-05.
- Check specifications: Always verify that the coolant you choose meets the required Ford specifications before use.
