Ford Mystique Owner's Manual page 140

Service your vehicle more frequently if you tow a trailer.
(See Servicing your vehicle if you tow in this chapter.)
Ten to 15% of the loaded trailer's weight should be on the
tongue. However, the tongue load should never exceed 10% of
the maximum weight that your vehicle can safely tow.
New vehicles should be driven 2,000 miles (3,200 km) before
towing a trailer.
Towing trailers beyond the maximum recommended
gross trailer weight exceeds the limit of the vehicle and
could result in engine damage, transaxle damage,
structural damage, loss of control, and personal injury.
Do not tow a trailer when using a temporary spare tire.
You should also limit your trailer's load when you tow in high
altitudes.
Preparing to Tow
For your safety and for the good of your vehicle, use the right
equipment for the type of trailer you tow. Also, make sure that
all towing equipment is properly attached to your vehicle. If
you are not certain that you are using the right equipment in
the proper manner, see your Ford or Lincoln-Mercury dealer.
Do not use hitches that clamp onto your vehicle's bumper. The
bumper is not designed to bear the load.
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