Maintenance Instructions
To function properly, the system must be completely filled with
coolant and all air must be expelled. To accomplish this, the
following procedures should be carefully completed:
1. Fully open the heater shut-off valves and coolant system
pipe vent (if present).
2. Pour a 50/50 mixture of the proper (ethylene glycol based)
coolant concentrate and demineralized or distilled water into
the deaeration tank. A 50/50 coolant mixture will achieve
a -34°F (-37°C) freeze point. A 53/47 coolant mixture will
achieve a -40°F (-40°C) freeze point.
NOTE: If system has been drained, fill with fresh 50/50 diluted
concentrate coolant or 50/50 pre-mixed coolant. If the system
has been flushed with water, a significant amount of the
freshwater flush will remain in the system. In this case refilling
with a mixture with a higher percentage (60 to 66%) of coolant
concentrate is advised in order to achieve a final mixture close
to 50/50.
3. Start the engine, and continue to add enoughcoolant to keep
the coolant deaeration tank completely full.
NOTE: Do not add any coolant to the coolant make-up
tank, as that volume will be necessary to adjust the coolant
concentration/freeze point later.
4. After adding coolant over a period of two minutes and
keeping the coolant deaeration tank full, replace the coolant
deaeration tank cap tightly.
5. With the system filled, operate the engine at various speeds
until coolant reaches normal operating temperature. Let
engine completely cool.
6. Slowly open the (pressurized) coolant deaeration tank cap
and measure the coolant concentration/freeze point. Top off
as needed with the correct top-off fluid (coolant concentrate,
50/50 coolant pre-mix, or demineralized water) necessary to
achieve a -34°F to -40°F (-37°C to -40°C) freeze point. Make
sure the coolant deaeration tank is completely full and the
coolant make-up tank (on the opposite side of the vehicle) is
at or within ¼ inch (6 mm) over the “MAX” line.
Filling Instructions (MaxxForce® 11 and 13 Engines)
NOTE: If system has been drained, fill with fresh 50/50 diluted
concentrate coolant or 50/50 pre-mixed coolant. If the system
has been flushed with water, a significant amount of the
freshwater flush will remain in the system. In this case refilling
with a mixture with a higher percentage (75%) of coolant
concentrate is advised in order to achieve a final mixture close
to 50/50.
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