Ford 2003 Mustang Owner's Manual page 153

Maintenance and care
Coolant refill capacity
To find out how much fluid your vehicle's cooling
system can hold, refer to Refill capacities in the
Capacities and specifications chapter.
Have your dealer check the engine cooling system
for leaks if you have to add more than 1.0 liter
(1.0 quart) of engine coolant per month.
Severe winter climate
If you drive in extremely cold climates (less than
–36°C [–34°F]), 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 is such that the
coolant will not freeze at the temperature level in
which you drive during winter months. Never
increase the coolant concentration above 60%.
Increased engine coolant concentrations above 60%
will decrease the freeze protection characteristics of
the engine coolant. Vehicles driven year-round in
non-extreme climates should use a 50/50 mixture of
engine coolant and distilled water for optimum
freeze protection.
CHECKING AND ADDING POWER STEERING
FLUID
Check the power
steering fluid. Refer to
the Scheduled
Maintenance Guide for
the service interval
schedules. If adding
fluid is necessary, use
only MERCON ATF.
1. Start the engine and let it run until it reaches
normal operating temperature (the engine coolant
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