214 Maintenance
ENGINE COOLANT
Checking Engine Coolant
The concentration and level of engine coolant should be
checked at the intervals listed in Maintenance Schedule at the
beginning of this section. The coolant concentration should be
maintained at 50/50 Motorcraft
®
Premium Gold Engine Cool-
ant coolant and distilled water, which equates to a freeze point
of -34°F (-36°C). Coolant concentration testing is possible
with a hydrometer or antifreeze tester. The level of coolant
should be maintained at the “FULL COLD” level or within the
“COLD FILL RANGE” in the coolant reservoir. If the level
falls below, add coolant per the instructions in Adding Engine
Coolant on page 215.
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 -34°F (-36°C).
• Boiling protection up to 265°F (129°C).
• Protection against rust and other forms of corrosion.
• Proper function of calibrated gauges.
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.
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