1993 Oldsmobile Cutlass Supreme Owner's Manuals

Sewice & Appearance Care
256
1 Uniform Tire Quality
Grading
The following information relates to the
system developed by the United States
National Highway Traffic Safety
Administration which grades tires by
treadwear, traction and temperature
performance. (This applies only to
vehicles sold in the United States.)
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 a half (1%)
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 dif€erences in road
characteristics and climate.
Traction-A, B, C
The traction grades, from highest to
lowest are:
A, B, and C. They represent
the tire’s 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.
Warning: The traction grade assigned
to this tire is based on braking (straight-
ahead) traction tests and does not
include cornering (turning) traction.
Temperature-A, B, C
The temperature grades are A (the
highest),
B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled
conditions on a specified indoor
laboratory test wheel. Sustained high
temperature can cause the material of
the tire to degenerate and reduce tire
life, and excessive temperature can lead
to sudden tire failure. The grade
C
corresponds to a level of performance
which all passenger car tires must meet
under the Federal Motor Vehicle Safety
Standard No.
109. Grades B and A
represent higher levels of performance
on the laboratory test wheel than the
minimum required by law.

Warning: The temperature grade for
this tire is established for a tire that is
properly inflated and not overloaded.
Excessive speed, underinflation, or
excessive loading, either separately
or
in combination, can cause heat
buildup and possible tire failure.
Those grades are molded on the
sidewalls of passenger car tires.
While the tires available as standard or
optional equipment on General Motors
vehicles may vary with respect to these
grades, all such tires meet General
Motors performance standards and
have been approved for use on General
Motors vehicles. All passenger type
(P Metric) tires must conform to
Federal safety requirements in addition
to these grades.
Wheel Alignment and
Tire Balance
The wheels on your vehicle were
aligned and balanced carefully at the
factory to give you the longest tire life
and best overall performance.
In most cases, you will not need to have
your wheels aligned again. However, if
you notice unusual tire wear
or your
vehicle pulling one way
or the other, the
alignment may need to be reset.
If you
notice your vehicle vibrating when
driving on a smooth road, your wheels
may need to be rebalanced.
Wheel Replacement
Replace any wheel that is bent, cracked
or badly rusted. If wheel nuts keep
coming loose, the wheel, wheel bolts,
and wheel nuts should be replaced. If
the wheel leaks air out, replace it
(except some aluminum wheels, which
can sometimes be repaired). See your
Oldsmobile dealer if any of these
conditions exist. Your dealer will know
the kind of wheel you need.
Each new wheel should have
the same
load carrying capacity, diameter, width,
offset, and be mounted the same way as
the one it replaces.
If you need to replace any of your
wheels, wheel bolts, or wheel nuts,
replace them only with new GM
original equipment parts. This way, you
will be sure to have the right wheel,
wheel bolts, and wheel nuts for your
Oldsmobile model.
257

!
A
Using the wrong replacement
wheels, wheel bolts, or wheel
nuts
on your vehicle can be
dangerous. It could affect the
bralcing and handling
of your
vehicle, make your tires lose
air and
male you lose control. You could
have a collision
in which you or
others could be injured. Always use
the correct wheel, wheel bolts, and
wheel nuts for replacement.
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Cleaning products can be hazardous. Some are toxic. Others can burst
into flame if you strike a match or get them on a hot part of the vehicle.
Some are dangerous
if you breathe their fumes in a closed space. When you use
anything in a container to clean
your Oldsmobile, be sure to follow the
instructions.
And always open your doors or windows when you're cleaning
the inside. 'p;F!.!z7par <.=&+,?. I ::;,:;&$,,&&
Never use these to clean your vehicle:
Gasoline Carbon Tetrachloride Turpentine
Benzene Acetone Lacquer Thinner
Naphtha Paint Thinner Nail Polish Remover
They can all be hazardous-some more than others-and thev can all damage
your vehicle, too.
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Service & Appearance Care
I
I
260
Cleaning the Inside of Your
Oldsmobile
Use a vacuum cleaner often to get rid of
dust and loose dirt. Wipe vinyl with a
clean, damp cloth.
Your Oldsmobile dealer has two
GM
cleaners-a solvent-type spot lifter and
a foam-type powdered cleaner. They
will clean normal spots and stains very
well.
Here are some cleaning tips:
Always read the instructions on the
Clean up stains as soon as you can-
cleaner label.
before they set.
Use a clean cloth or sponge, and
change to a clean area often. A
soft
brush may be used if stains are
stubborn.
Use solvent-type cleaners in a well-
ventilated area only. If you use them,
don’t saturate the stained area.
If a ring forms after spot cleaning,
clean the entire area immediately
or it
will set.
Using Foam-Type Cleaner on
Fabric
Vacuum and brush the area to remove
Always clean a whole trim panel or
any
loose dirt.
section. Mask surrounding trim along
stitch
or welt lines.
Mix Multi-Purpose Powdered Cleaner
following the directions on the
container label.
Use suds only and apply with a clean
sponge.

Cleaning the Top of the
Instrument Panel
Use only mild soap and water to clean
the top surfaces of the instrument
panel.
Sprays containing silicones or
waxes may cause annoying reflections
in the windshield and even make it
difficult to see through the windshield
under certain conditions.
,*,.l*I ~' ,I e:?, 5 %>,,,..
Care of Safety Belts
.Keep belts clean-and dry.
Do not bleach or dye safety
belts.
If you do, it may
severely weaken them.
In a crash
they might not be able to provide
adequate protection. Clean safety
belts only with mild soap and
lukewarm water.