User Manual - Page 202

For 2000 MERCURY COUGAR.

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Maintenance
and care
202
Cooling
system – engine
coolant
The importance of engine
coolant
Engine coolant provides freeze
protection, boil protection, cooling
efficiency and corrosion protection
to the engine and cooling
components. In order to obtain
these protections, the engine
coolant must be maintained at the
proper concentration and fluid level
in the coolant reservoir.
Your vehicle was factoryĆfilled with
a 50/50 engine coolant and water
concentration. If the concentration
of coolant falls below 40 % or rises
above 60 %, the engine parts could
become damaged or not work
properly. A 50/50 mixture of
coolant and water provides the
following:
Boiling protection up to 265°F
(129°C).
Freeze protection down to -34°F
(-36°C).
Protection against rust and other
forms of corrosion.
Enables calibrated gauges to
function properly.
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