Ford 1997 Aspire Manual page 169

Replacing the wiper blades
Tires
Look at your tires each time you fill your fuel
tank. If one tire looks lower than the others,
check the pressure in all of them. Always follow
these precautions:
Use an accurate tire pressure gauge.
Check the tire pressure when tires are cold,
after the vehicle has been parked for at least
one hour or has been driven less than 3 miles
(5 km).
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