Coolant Usage In Severe Winter Climate; Coolant Usage In Hot Climate; Use Of Recycled Engine Coolant - Ford 2001 Mercury Cougar Owner's Manual

Maintenance and care
Coolant usage in severe winter
climate
If you drive in extremely cold
climates less than -34°F (-36°C), it
may be necessary to increase the
coolant concentration above 50 %.
Refer to the chart on the coolant
container to ensure the coolant
concentration in your vehicle will
provide adequate freeze protection.
Never increase the engine
coolant concentration above
60 % (protection to -60°F). At a
level over 60 %, your engine could
overheat and become damaged.

Coolant usage in hot climate

If you drive in hot climates, it is still
necessary to maintain the coolant
concentration at 50/50 coolant and
water. Do not allow the
concentration to fall below
40 % coolant. At a concentration
less than 40 %, the corrosion
protection to your engine and
cooling components may be
compromised and permanent
damage may result.

Use of recycled engine coolant

Ford Motor Company does not
recommend the use of recycled
engine coolant in vehicles originally
equipped with orange Extended
Life coolant since a recycling
process that produces orange
coolant is not yet available.