How much coolant does a 6.7 diesel hold?
The 6.7-liter diesel engine, commonly found in Ford Super Duty trucks, holds approximately 13.7 quarts (13 liters) of coolant. This coolant is essential for maintaining the proper operating temperature of the engine and preventing overheating.
Detailed Explanation
The 6.7-liter diesel engine, developed by Ford and Cummins, is a powerful and efficient powerplant used in various Ford Super Duty trucks, such as the F-250, F-350, and F-450. This engine requires a significant amount of coolant to ensure proper cooling and prevent damage from excessive heat buildup.
According to the manufacturer's specifications, the 6.7-liter diesel engine holds a total of 13.7 quarts (13 liters) of coolant. This coolant is responsible for absorbing heat from the engine block, cylinder heads, and other critical components, and then transferring that heat to the radiator, where it can be dissipated into the surrounding air.
Maintaining the proper coolant level is crucial for the engine's longevity and performance. If the coolant level drops too low, the engine may overheat, leading to potential damage to the engine block, cylinder heads, or other components. Conversely, if the coolant level is too high, it can cause other issues, such as increased pressure in the cooling system or even coolant leaks.
Coolant Maintenance Tips
- Check the coolant level regularly: Inspect the coolant level in the overflow reservoir or radiator and top it up as needed, following the manufacturer's recommendations.
- Use the correct coolant type: The 6.7-liter diesel engine requires a specific type of coolant, usually a mixture of ethylene glycol and water. Using the wrong coolant can lead to compatibility issues and potential damage to the engine.
- Flush and replace the coolant: The coolant should be flushed and replaced at the intervals specified in the vehicle's maintenance schedule, typically every 30,000 to 60,000 miles (48,000 to 96,000 km).
- Inspect the cooling system components: Regularly check the radiator, hoses, and other cooling system components for signs of wear or damage, and replace them as needed to maintain optimal performance.
By following these maintenance tips and ensuring the proper coolant level, you can help extend the life of your 6.7-liter diesel engine and keep it running at its best.
How many gallons does a 6.7 diesel hold?
Capacities and Specifications - 6.7L Diesel
| Item | Capacity |
|---|---|
| Fuel tank (Medium) | 53 gal (200.6 L) (Usable capacity)3 |
| 56 gal (211.9 L) (Liquid capacity) | |
| Fuel tank (Large) | 61 gal (230.9 L) (Usable capacity)3 |
| 65 gal (246 L) (Liquid capacity) |
How much coolant does a 2011 F250 6.7 take?
The 2011 Ford F-250 6.7L has two separate cooling systems. The primary cooling system has a capacity of approximately 29.4 to 30.3 quarts (27.827.827.8 to 28.728.728.7 liters), while the secondary cooling system has a capacity of about 8.1 quarts (7.77.77.7 liters).
This video demonstrates how to drain and refill the cooling system of a 6.7L Powerstroke engine: 1mBlue Collar GarageYouTube · Jun 2, 2022
Primary cooling system
- Capacity: 29.429.429.4 to 30.330.330.3 quarts (27.827.827.8 to 28.728.728.7 liters)
- Function: Cools the engine and engine oil.
Secondary cooling system
- Capacity: 8.18.18.1 quarts (7.77.77.7 liters)
- Function: Cools the fuel cooler, automatic transmission cooler, and charge air cooler.
You can watch this video to learn about the different components of the 6.7L Powerstroke cooling system: 59spowerstrokehelpYouTube · May 7, 2019
Important notes
- The primary and secondary systems are separate and their coolant should not be mixed.
- Always check the specific capacity listed in your owner's manual to ensure accuracy.
- When performing a coolant flush, it may require more coolant initially to fill the system properly and remove air.
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.
How much coolant does a 6.7 powerstroke take?
A 6.7 Powerstroke typically holds approximately 29.4–35.1 quarts (around 7.3–8.7 gallons) of coolant, depending on the specific model year and cooling system components. The total capacity is often split between a primary system (31.7–33.2 quarts) and a secondary system (14.3–15.1 quarts), requiring careful, step-by-step filling and bleeding to remove air pockets.
Coolant capacity by model year
- 2011-2016: 29.4–30.3 quarts
- 2017-2020: 31.7–35.1 quarts
- Note: Capacities can vary slightly based on whether it's a single or dual cooling system (like those with a secondary coolant loop for the turbocharger or other components).
How to fill the system
- Drain: Completely drain the old coolant from both the primary and any secondary cooling system drain plugs.
- Flush: Flush the system thoroughly with distilled water to remove any remaining debris or old coolant.
- Mix: Prepare the new coolant mixture. Use a 50/50 mix of coolant and distilled water, or a pre-mixed coolant, as specified by the manufacturer.
- Fill primary system: Fill the primary cooling system (often the driver's side reservoir) to the maximum fill line, adding about three to four gallons initially.
- Fill secondary system: Fill the secondary cooling system (passenger's side reservoir) as well.
- Bleed: Start the truck, turn the heater to high, and let the engine run to circulate the coolant and bleed air from the system.
- Top off: As the level drops, add more coolant to maintain the correct fill level until no more air bubbles are visible. The total amount added may exceed the initial calculation due to air in the system.
- Check: After the system has reached its operating temperature, check the coolant level again and top off as necessary.
