1998 Mercury Mystique Owner's Manuals

Maintenance and care
153
Failure to follow these
precautions may adversely
affect the handling of the vehicle
and make it easier to lose control
and roll over.
Replacing tires
Replace tires when the wear band
is visible through the tire treads.
When replacing full size
tires, never mix radial, bias-
belted, or bias-type tires. Use only
the tire sizes that are listed on the
tire pressure decal. Make sure that
all tires are the same size, speed
rating, and load-carrying capacity.
Use only the tire combinations
recommended on the decal. If you
do not follow these precautions,
your vehicle may not drive
properly and safely.
Do not replace your tires
with “high performance”
tires or larger size tires.
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Maintenance and care
154
Dispose of worn tires in
accordance with local
environmental regulations.
Refer to the Safety Compliance
Certification label to determine the
specific size tire and wheel Ford
Motor Company recommends for
use on this vehicle.
When purchasing replacement tires
for your vehicle, consult your
dealer or a qualified service
technician to ensure that the
correct tire type is used.
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Maintenance and care
155 The tires on your vehicle have all-
weather treads to provide traction
in rain and snow. However, in some
climates, using snow tires and
chains may be necessary. Ford
offers snow chains as a Ford
approved accessory and
recommends use of these or their
equivalents on approved tires. See
your dealer or a qualified service
technician for more information on
tire chains for your vehicle. Follow
these guidelines when using snow
tires and chains:
•Install chains securely, verifying
that the chains do not touch any
wiring, brake lines or fuel lines.
•Install the chains on the front
tires only.
•Do not use tire chains 205/60
tires and 205/55R16 Z rated tires.
Steering, suspension and body
components may be damaged by
use of chains.
Snow tires must be the same
size and grade as the tires
you currently have on your
vehicle.
Using snow tires and chains
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Maintenance and care
156Change over from winter to
summer tires as soon as road
conditions allow, this will reduce
fuel consumption and noise in the
vehicle’s interior.
•Drive cautiously. If you hear the
chains rub or bang against the
vehicle, stop and retighten them.
If this does not work, remove the
chains to prevent vehicle
damage.
•Local regulations may prohibit or
restrict the use of tire chains.
Investigate the laws and
regulations in your area before
installing chains.
•Avoid overloading your vehicle.
•Do not use tire chains on
temporary spare tires.
•Remove the tire chains when
they are no longer needed. Do
not use chains on dry roads.
•The suspension insulation and
bumpers will help prevent
vehicle damage. Do not remove
these components from the
vehicle when using snow tires
and chains.
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Maintenance and care
157 IMPORTANT FUEL
INFORMATON
Important safety precautions
Do not overfill the fuel tank.
The pressure in an overfilled
tank may cause leakage and lead
to fuel spray and fire.
If you do not use the proper
fuel cap, the pressure in the
fuel tank can damage the fuel
system or cause it to work
improperly in a collision.
The fuel system may be
under pressure. If the fuel
cap is venting vapor or if you hear
a hissing sound, wait until it stops
before completely removing the
cap.
Automotive fuels can cause
serious injury or death if
misused or mishandled.
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Maintenance and care
158Observe the following guidelines
when handling automotive fuel:
•Extinguish all smoking materials
and any open flames before
fueling your vehicle.
•Always turn off the vehicle
before fueling.
•Make sure the fuel cap is
correctly fitted after fueling.
Failure to do so may cause the on
board diagnostic system to
illuminate the CHECK ENGINE
light.
•Automotive fuels can be harmful
or fatal if swallowed. If fuel is
swallowed, call a physician
immediately, even if no
symptoms are immediately
apparent. The toxic effects of
fuel may not be visible for hours.
•Fuels can also be harmful if
absorbed through the skin. If fuel
is splashed on the skin, promptly
remove contaminated clothing
and wash skin thoroughly with
soap and water.
•If fuel is splashed in the eyes,
remove contact lenses (if worn),
flush with water for 15 minutes
and seek medical attention.
•Be particularly careful if you are
taking “Antabuse” or other forms
of disulfiram for the treatment of
alcoholism. Breathing gasoline
vapors or skin contact could
cause an adverse reaction.
Consult a physician immediately.
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Maintenance and care
159 Choosing the right fuel
Use only UNLEADED FUEL. The
use of leaded fuel is prohibited by
law and could damage your vehicle.
The damage may not be covered by
your warranty.
Your vehicle was not designed to
use fuel containing manganese-
based additives such as MMT.
Additionally, vehicles certified to
California emission standards
(indicated on the underhood
Vehicle Emission Control
Information label) are designed to
operate on California reformulated
gasolines. If California reformulated
gasoline is not available when you
refuel, your vehicle can be
operated on non-California fuels.
However, even though your engine
will perform adequately on other
gasolines, the performance of the
emission control devices and
systems may be adversely affected.
Repair of damage caused by a fuel
that your vehicle was not designed
for may not be covered by your
warranty.
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Maintenance and care
160Octane recommendations
Your vehicle is designed to use
regular gasoline with an (R+M)/2
octane rating of 87. We do not
recommend gasolines labeled as
“regular” in high altitude areas that
are sold with octane ratings of 86
or even less.
Do not be concerned if your vehicle
sometimes knocks lightly. However,
if it knocks heavily under most
driving conditions on the
recommended octane, see your
dealer or a qualified service
technician to prevent any engine
damage.
87
MINIMUM OCTANE RATING
(R+M)/2 Method
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