How much coolant does a Dodge Ram 2500 diesel hold?
For most Ram 2500 pickups with the 6.7-liter Cummins diesel, the cooling system is designed to hold roughly 30 quarts of coolant, about 7.5 gallons. The exact capacity can vary by model year, cooling configuration, and optional equipment.
What affects coolant capacity
The total coolant volume is not identical across every Ram 2500. Variations come from changes in engine design, cooling-system layout, and added equipment over different model years.
- Engine variant and generation (e.g., older 5.9L Cummins versus later 6.7L Cummins).
- Radiator size and auxiliary cooling components (extra radiators or heat exchangers).
- Heater core size and coolant-routing design (longer loops add volume).
- Presence of options such as engine block heaters or additional reservoirs that affect total capacity.
In short, there isn’t a single universal figure for every Ram 2500 diesel; always check the exact specification for your year and trim.
Typical capacity ranges by configuration
Use these as rough guidelines when planning maintenance like coolant replacement or flush intervals. Exact capacity should be confirmed from official documentation for your specific truck.
- Common 6.7L Cummins diesel with standard cooling: roughly 28–32 quarts (7–8 gallons).
- With extra cooling equipment or heavy-duty packages: up to about 34 quarts (about 8.5 gallons).
Because capacities depend on the exact hardware in your truck, confirm the precise number from the owner's manual, service data, or the radiator label on your vehicle.
How to verify the capacity for your truck
To confirm the exact coolant capacity for your Ram 2500 diesel, consult the official owner’s manual or service data for your specific year and trim. If you are performing a coolant service, follow the procedure in the manual and account for all cooling-system components (radiator, engine block, heater core, hoses, and any auxiliary coolers).
Summary
The Dodge Ram 2500 diesel typically holds around 30 quarts of coolant in its cooling system, with a practical range from about 28 to 34 quarts depending on year, engine variant, and cooling extras. Always verify the exact figure for your truck with the official manual or your dealer to ensure accuracy.
How many gallons does a 6.7 l Cummins hold?
A 6.7L Cummins engine typically takes 12 quarts (or 3 gallons) of oil, although the exact capacity can vary slightly by model year. For 2019 and newer models, the capacity is 12 quarts with a filter change, and for older models (2007.5–2018), it is also 12 quarts with a filter change.
- Oil: A 6.7L Cummins engine requires about 12 quarts (or 3 gallons) of engine oil.
- Model year variations: While 12 quarts is the standard for most modern engines, older models may have slightly different capacities, so it's always best to check your owner's manual or use the dipstick to confirm.
- Coolant: The coolant capacity for a 4th generation 6.7L Cummins (2010-2018) is about 5.7 gallons.
- DEF (Diesel Exhaust Fluid): The DEF tank size is 5.5 gallons for 4th generation models (2010-2018).
- Fuel: The stock fuel tank can hold approximately 32 gallons on a 4th generation model, but aftermarket tanks with larger capacities are available.
How much antifreeze does a Ram 2500 diesel hold?
Coolant Capacity 17.30 litres (18.3 qt.) Compression Ratio 10.0:1 Power 410 hp @ 5,600 rpm Torque 429 lb. -ft.
How much coolant does a 6.7 diesel take?
Capacities and Specifications - 6.7L Diesel
| Item | Capacity |
|---|---|
| Engine coolant (primary high-temperature cooling system loop) | 33.2 L (35.1 qt)1 |
| Engine coolant additive (primary high-temperature cooling system loop) | 1.4 L (47.3 fl oz)2 |
| Engine coolant (secondary cooling system) | 14.3 L (15.1 qt)1 |
How many gallons of coolant does a 6.0 diesel take?
A 6.0 Powerstroke engine has a coolant capacity of approximately 27.5 quarts. This is a large capacity, and it is important to perform a complete system flush to ensure old coolant is fully drained to avoid air pockets and overheating.
- The total capacity is 27.5 quarts (or about 6.875 gallons), which includes the radiator, engine block, and heater core.
- When refilling, you will typically need around 4.5 gallons of coolant and water mixture, depending on how much remains after draining.
- To ensure a complete flush and refill, run the engine with the heater on to circulate coolant and then drain again before adding the new mixture.
- Always monitor the coolant level after refilling and check for any leaks, as coolant leaks and overheating are common issues with the 6.0 Powerstroke.
