6.7L Power Stroke Fluid Capacity Reference

Having the right fluids and quantities on hand makes service on the 6.7L Power Stroke faster and cleaner. This is a quick-reference of typical capacities and fluid types. Capacities vary by model year and configuration, so treat these as typical figures and refer to your owner's manual for the exact numbers for your truck.

Engine oil

• Capacity: typically around 13 quarts with a new filter.
• Grade: a diesel-rated oil in the viscosity specified for your year, commonly a 10W-30 or 15W-40 depending on model year and climate; refer to your manual.
• Filter: replace the oil filter at every oil change.

Cooling system

The 6.7L Power Stroke uses more than one cooling circuit, and the fluid types differ.

• Primary system: uses a gold-spec Ford coolant; refer to your manual for the exact specification.
• Secondary (low-temperature) system: uses a separate coolant, commonly a yellow low-conductivity type; do not cross-fill the two.
• Capacity: the primary system holds several gallons; verify the exact figure in your manual and fill each system with the correct fluid.

Diesel exhaust fluid (DEF)

• Tank size: typically around 5 gallons.
• Fluid: use only certified DEF meeting ISO 22241; never substitute.
• Consumption: roughly 2 to 3 percent of fuel burned, more when towing.

Driveline fluids

• Transmission (TorqShift): use the Mercon-type fluid specified for your year; capacity depends on whether you drain or fully exchange.
• Front and rear axles: use the gear oil grade specified for your axles, commonly 75W-140 on heavy-duty rears; check for a limited-slip additive requirement.
• Transfer case (4WD): uses a specific fluid rather than gear oil; refer to your manual.

Need filters, a water pump, thermostat, or other 6.7L Power Stroke service parts? Email sales@coredieselparts.com with your VIN and we will match the correct items.

Frequently asked questions

How much oil does a 6.7L Power Stroke take?

Typically about 13 quarts with a new filter, though this varies by year. Always fill to the correct level on the dipstick and use the viscosity specified in your manual.

Why does the 6.7L have two different coolants?

It uses a primary cooling circuit and a separate low-temperature circuit for charge-air and other components. They use different coolants, so keep them separate and fill each with the correct fluid.

What coolant does the 6.7L Power Stroke primary system use?

A gold-spec Ford coolant. Refer to your manual for the exact specification, and do not mix it with the secondary system's coolant or with an incompatible chemistry.