Ford Mercury Villager 1997 Owner's Manual page 271

Roadside Emergencies
Storing the jack
16. Make sure the lug wrench is secured back into the tool kit and
store it next to the jack.
17. Unblock the wheels.
Retighten the lug nuts to the specified torque at 500 miles (800
km) of operation, after any wheel change, or any time the lug nuts
are loosened.
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