FORD 2001 Windstar - Manual (Page 216)

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, 014-R1060). The level of coolant should
be maintained at the
Љcold fullЉ of Љcold fill rangeЉ 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 gages 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 “cold fill level” or within the “cold
fill range” as listed on the engine coolant reservoir (depending upon
application).
COLD FILL RANGE
Maintenance and care
216