ENGINE AND SECONDARY COOLING SYSTEM COOLANT
Checking engine coolant
The concentration (freeze point protection), additive strength (corrosion
inhibitor), and level of coolant should be checked at the mileage intervals
listed in thescheduled maintenance information.The coolant
concentration should be maintained at 50/50 coolant and water, which
equates to a freeze point of -36°C (-34°F). Coolant concentration testing
is possible with a hydrometer or antifreeze tester (such as the Rotunda
Battery and Antifreeze Tester, 0014–R1060). The level of coolant should
be maintained within the COLD FILL RANGE in the coolant reservoirs. If
the level falls below, add coolant per the instructions in theAdding
coolantsection.
Your vehicle was factory-filled with a 50/50 coolant and water
concentration. If the concentration of coolant falls below 40% or above
60%, the engine parts could become damaged or not work properly.A
50/50 mixture of coolant and water provides the following:
•freeze protection down to -36°C (-34°F).
•boiling protection up to 129°C (265°F).
•protection against rust and other forms of corrosion.
•
an accurate temperature readout from the engine coolant gauge.
When the engine is cold, check the level of coolant in the reservoirs. See
Identifying components in the engine compartmentfor the location of
the engine and secondary cooling system reservoirs.
•The coolant should be within the COLD FILL RANGE in the coolant
reservoirs.
•Refer to thescheduled maintenance informationfor service interval
schedules.
•Be sure to read and understandPrecautions when servicing your
vehiclein yourOwner’s Guide.
If the coolant has not been checked at the recommended interval, the
engine or secondary coolant reservoir may become low or empty. If
either reservoir is low or empty, add coolant to the reservoir(s). Refer to
Engine and secondary cooling system refill procedurein this chapter.
Note:Automotive fluids are not interchangeable; do not use engine
coolant or windshield washer fluid outside of its specified function and
vehicle location.
Maintenance and Specifications
44
2011 Econoline(eco)
Supplement, 1st Printing
USA(fus)
