Lincoln MKZ 2015 Owner's Manual page 289

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
Note: Do not use stop leak pellets, cooling
system sealants or additives as they can
cause damage to the engine cooling or
heating systems. Your warranty may not
cover these damages.
Note: During normal vehicle operation, the
engine coolant may change color from
orange to pink or light red. As long as the
engine coolant is clear and uncontaminated,
this color change does not indicate that the
engine coolant has degraded, nor does it
require that you drain the engine coolant,
flush the system or replace the engine
coolant.
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Maintenance
Do not mix different colors or types of
coolant in your vehicle. 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. Use
prediluted engine coolant meeting the Ford
specification. See Capacities and
Specifications (page 353).
In case of emergency, you can add a large
amount of water without engine coolant in
order to reach a vehicle service location. In
this instance, qualified personnel:
1. Must drain the cooling system.
2. Chemically clean the coolant system with
Motorcraft Premium Cooling System
Flush.
3. Refill with engine coolant as soon as
possible.
Water alone, without engine coolant, can
cause engine damage from corrosion,
overheating or freezing.
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Do not use the following as a coolant
substitute:
• Alcohol.
• Methanol.
• Brine.
• Any engine coolant mixed with alcohol
or methanol antifreeze or 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.
When adding coolant:
1. Unscrew the cap slowly. Any pressure
will escape as you unscrew the cap.
2. Add prediluted engine coolant meeting
the Ford specification. See Capacities
and Specifications (page 353).
3. Check the coolant level in the coolant
reservoir the next few times you drive
your vehicle.