1999 Mercury Mystique service

Maintenance and care
177
Battery replacement
If your original equipment battery
requires replacement while under
warranty, it will be replaced with a
Motorcraft service battery,
identical in design technology. Like
the original equipment battery, it
should not require water addition
during its normal life of service;
however, for severe service usage
or in high temperature climates,
refer to the maintenance guide and
or service guide for additional
information. Do not overfill the
battery cell.
If the electrolyte level in your
battery gets low, you can add plain
tap water to the battery, as long as
you do not use hard water (water
with a high mineral or alkali
content). If possible, however, try
to only fill the battery cell with
distilled water. If the battery needs
water often, have the charging
system checked.
If you see any corrosion on the
battery cables or terminals, remove
the cables from the terminal(s) and
clean with a wire brush. You can
neutralize the acid with a solution
of baking soda and water. Reinstall
the cables when you are done
cleaning them, and apply a small
quantity of grease to the top of
each battery terminal to help
prevent corrosion.
31MMCen 4/13/99 2:17 PM Page 177

Maintenance and care
180
Checking wiper blades
Check the wiper blades on your
vehicle for roughness by running
the tips of your fingers over the
edge of the blade.
Traces of grease, silicone and fuel
prevent wiper blades from
functioning properly. We
recommend Ford cleaning
solutions or equivalent to clean
wiper blades.
Change the wiper blades on your
vehicle at least once a year.
Cabin air filter replacement
In your climate control system, you
have a filter that cleans the air
before it enters the interior of the
vehicle. This filter should be
replaced at the intervals in the
maintenance guide and or service
guide.
To replace the cabin air filter:
1. Unscrew the nut in the base of
each windshield wiper arm.
Remove the windshield wiper arms.
31MMCen 4/13/99 2:17 PM Page 180

Maintenance and care
183
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire graded 150
would wear one and one-half
(1 1/2) times as well on the
government course as a tire graded
100. The relative performance of
tires depends upon the actual
conditions of their use, however,
and may depart significantly from
the norm due to variations in
driving habits, service practices,
and differences in road
characteristics and climate.
Traction AA A B C
The traction grades, from highest
to lowest are AA, A, B, and C.
Those grades represent the tireÕs
ability to stop on wet pavement as
measured under controlled
conditions on specified government
test surfaces of asphalt and
concrete. A tire marked C may
have poor traction performance.
The traction grade assigned
to this tire is based on
straight-ahead braking traction
tests, and does not include
acceleration, cornering,
hydroplaning, or peak traction
characteristics.
31MMCen 4/13/99 2:17 PM Page 183

Maintenance and care
185
Checking tire pressure
Check the tire pressure
periodically after the vehicle has
been parked for at least one hour
or has been driven less than 5 km
(3 miles). Inflate the tires as
necessary. To check the tire
pressure, insert the tire pressure
gauge into the valve.
The cold pressure amount is listed
on the Safety Compliance
Certification label.
Improperly inflated tires can
affect vehicle handling and
can fail suddenly, possibly
resulting in loss of vehicle control.
Rotating tires
Rotate your tires at regular
intervals for even wear. Rotation
intervals are listed in the
maintenance guide and or service
guide.
31MMCen 4/13/99 2:17 PM Page 185

Maintenance and care
187 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.
31MMCen 4/13/99 2:17 PM Page 187

Maintenance and care
188
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 on 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
31MMCen 4/13/99 2:17 PM Page 188

Maintenance and care
193
Octane 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
ÒregularÓ 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
Fuel quality
If you are experiencing starting,
rough idle or hesitation problems
try a different brand of fuel. If the
condition persists, see your dealer
or qualified service technician.
The American Automobile
Manufacturers Association
(AAMA) issued a gasoline
specification to provide information
on high quality fuels that optimize
the performance of your vehicle.
We recommend the use of gasolines
that meet the AAMA specification
if they are available.
It should not be necessary to add
any aftermarket products to your
fuel tank if you continue to use a
high-quality fuel.
31MMCen 4/13/99 2:17 PM Page 193

Maintenance and care
196
EMISSION CONTROL SYSTEM
Your vehicle is equipped with
various emission control
components and a catalytic
converter which will enable your
vehicle to comply with applicable
exhaust emission standards. To
make sure that the catalytic
converter and other emission
control components continue to
work properly:
¥ Use unleaded fuel only.
¥ Avoid running out of fuel.
¥ Do not turn off the ignition while
your vehicle is moving, especially
at high speeds.
¥ Have the items listed in your
maintenance guide and or service
guide performed according to the
specified schedule.
The scheduled maintenance
services listed in the maintenance
guide and or service guide are
required because they are
considered essential to the life and
performance of your vehicle and to
its emissions system.
If other than Ford, Motorcraft, or
Ford authorized parts are used for
maintenance replacements or for
service of components affecting
emissions control, such non-Ford
parts should be equivalent to
genuine Ford Motor Company parts
in performance and durability.
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