Ford Escape Hybrid (2012 year). Manual — part 75

Checking engine coolant

The concentration and level of
engine coolant should be checked at
the intervals listed in scheduled
maintenance information. The
coolant concentration should be
maintained at 50/50 coolant and
distilled water. For best results,
coolant concentration should be
tested with a refractometer such as
Rotunda tool 300-ROB75240E
available from your dealer. Ford
does not recommend the use of
hydrometers or coolant test strips
for measuring coolant
concentration.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 the
Adding engine coolant section.
When the engine is cold, check the
level of engine coolant in the reservoir.

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302

Checking motor/electronics (M/E) coolant

The M/E coolant reservoir is located
behind the engine coolant reservoir.
Refer to the following engine
coolant sections for all information,
instructions and warnings related to
cooling systems. The two systems
use the same coolant and operate
similarly, with the Motor and
Electronics system generally
operating at a lower temperature
and pressure. The fluid levels in
both reservoirs need to be
maintained. When the engine is
cold, check the level of M/E coolant
in the reservoir.

Factory fill and coolant specifications
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:
• Improved freeze protection.

• Improved boiling protection.

• Protection against rust and other forms of corrosion.

• Enables calibrated gauges to work properly.
Common instructions for cooling systems
• 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 information for service interval

schedules.

• Be sure to read and understand Precautions when servicing your

vehicle in this chapter.

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303

If the engine coolant has not been checked at the recommended interval,
the engine coolant reservoir may become low or empty. If the reservoir is
low or empty, add engine coolant to the reservoir. Refer to Adding
engine coolant in this chapter.

Note: Automotive fluids are not interchangeable; do not use engine
coolant/antifreeze or windshield washer fluid outside of its specified
function and vehicle location.

Adding engine coolant

When adding coolant, make sure it is a 50/50 mixture of engine coolant
and distilled water. Add the mixture to the coolant reservoir, when the
engine is cool, until the appropriate fill level is obtained. If coolant is
filled to the COLD FILL RANGE or FULL COLD level when the engine is
not cool, the system will remain underfilled.

WARNING: Do not add engine coolant when the engine is hot.
Steam and scalding liquids released from a hot cooling system

can burn you badly. Also, you can be burned if you spill coolant on hot
engine parts.

WARNING: Do not put engine coolant in the windshield washer
fluid container. If sprayed on the windshield, engine coolant

could make it difficult to see through the windshield.

• DO NOT MIX different colors or types of coolant in your vehicle.

Make sure the correct coolant is used. Mixing of engine coolants may
harm your engine’s cooling system. The use of an improper coolant
may harm engine and cooling system components and may void the
warranty. Refer to Maintenance product specifications and
capacities in this chapter.

Note: Do not use stop leak pellets or cooling system sealants/additives
as they can cause damage to the engine cooling and/or heating systems.
This damage would not be covered under your vehicle’s warranty.
• A large amount of water without engine coolant may be added, in case

of emergency, to reach a vehicle service location. In this instance, the
cooling system must be drained, chemically cleaned with Motorcraft

威

Premium Cooling System Flush, and refilled with a 50/50 mixture of
engine coolant and distilled water as soon as possible. Water alone
(without engine coolant) can cause engine damage from corrosion,
overheating or freezing.

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304

• Do not use alcohol, methanol, brine or any engine coolants

mixed with alcohol or methanol antifreeze (coolant). Alcohol
and other liquids can cause engine damage from overheating or
freezing.

• Do not add extra inhibitors or additives to the coolant. These

can be harmful and compromise the corrosion protection of the engine
coolant.

For vehicles with overflow coolant systems with a non-pressurized cap
on the coolant recovery system, add coolant to the coolant recovery
reservoir when the engine is cool. Add the proper mixture of coolant and
distilled water to the FULL COLD level. For all other vehicles which have
a coolant degas system with a pressurized cap, or if it is necessary to
remove the coolant pressure relief cap on the radiator of a vehicle with
an overflow system, follow these steps to add engine coolant.

WARNING: To reduce the risk of personal injury, make sure the
engine is cool before unscrewing the coolant pressure relief cap.

The cooling system is under pressure; steam and hot liquid can come
out forcefully when the cap is loosened slightly.

Add the proper mixture of coolant and water to the cooling system by
following these steps:

1. Before you begin, turn the engine off and let it cool.

2. When the engine is cool, wrap a thick cloth around the coolant
pressure relief cap on the coolant reservoir (a translucent plastic bottle).
Slowly turn cap counterclockwise (left) until pressure begins to release.

3. Step back while the pressure releases.

4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.

5. Fill the coolant reservoir slowly with the proper coolant mixture, to
within the COLD FILL RANGE or the FULL COLD level on the reservoir.
If you removed the radiator cap in an overflow system, fill the radiator
until the coolant is visible and radiator is almost full.

6. Replace the cap. Turn until tightly installed. Cap must be tightly
installed to prevent coolant loss.

After any coolant has been added, check the coolant concentration (refer
to Checking engine coolant). If the concentration is not 50/50, drain
some coolant and adjust the concentration. It may take several drains
and additions to obtain a 50/50 coolant concentration.

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305