FORD 2004 Explorer v.3 - Manual (Page 240)

“COLD FILL RANGE” level in the coolant reservoir. If the level falls
below, add coolant per the instructions in the Adding engine coolant
section.
Your vehicle was factory-filled with a 50/50 engine 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.
• Enables calibrated gauges to work properly.
When the engine is cold, check the
level of the engine coolant in the
reservoir.
• The engine coolant should be at the “FULL COLD” level or within the
“COLD FILL RANGE” as listed on the engine coolant reservoir
(depending upon application).
• Refer to the Scheduled Maintenance Guide for service interval
schedules.
• Be sure to read and understand Precautions when servicing your
vehicle in this chapter.
REVIEW COPY:
2004 Explorer (exp), Owners Guide (post-2002-fmt) (own2002),
Market: USA English (fus)
Maintenance and Specifications
240