1993 Oldsmobile Cutlass Supreme tires

Service & Appearance Care
254
Tire Inspection and Rotation
To make your tires last longer, have
them inspected and rotated at the
mileages recommended in the
Maintenance Schedule. See the
Index
under Scheduled Maintenance
Services.
Use this rotation pattern. After
the tires have been rotated, adjust
the front and rear inflation pressure as
shown on the Tire-Loading Information
label. Make certain that all wheel nuts
are properly tightened. See the
Index
under Wheel Nut Torque.
A
Rust or dirt on a wheel, or on
the parts to which it is
fastened, can make the wheel nuts
become loose after a time. The
wheel could come
off and cause an
accident. When you change a
wheel, remove any rust or dirt from
places where the wheel attaches to
the vehicle. In an emergency, you
can use a cloth or a paper towel to
do this; but be sure to use a scraper
or wire brush later, if you need to,
to get all the rust or dirt
off. (See
the
Index under Changing a Flat
Tire. 1

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.
- -~ I
I

White Sidewall Tires
Your Oldsmobile dealer has a GM
White Sidewall Tire Cleaner. You can
Weathersfrips
These are places where glass or metal
meets rubber. Silicone grease there will
make them last longer, seal better, and
not squeak. Apply silicone grease with a
clean cloth
at least everv six months.
Sheet Mefal Damage
If your vehicle is damaged and requires
sheet metal repair or replacement, make
sure the body repair shop applies anti-
corrosion material
to the parts repaired
or replaced to restore corrosion
protection.

Maintenance Schedule
Section A: Scheduled Maintenance Services (Cant.)
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule 11.
The proper fluids and lubricants to use are listed in Section
D. Make sure whoever services your vehicle uses these. All
parts should be replaced and all necessary repairs done
before you or anyone else drives the vehicle.
ITEM
NO. SERVICE
1 Engine Oil and Filter Change”-Always use SG
296
2
Energy Conserving I1 oils for proper viscosity. The
“SG” designation may be shown alone or in
combination with others, such as “SG/CC,”
“SG/CD” or “SF, SG, CC,” etc.
To determine the
preferred viscosity for your vehicle’s engine (e.g.,
SAE 5W-30 or SAE 1OW-30) see the Index under
Engine Oil.
Chassis Lubrication-Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. Lubricate the front and
rear suspension and steering linkage.
ITEM
NO. SERVICE
3 Throttle Body Mounting Bolt Torque (3.1L
Code T or M engines only)*-Check the torque of
the mounting bolts and/or nuts.
4 Tire and Wheel Rotation and Inspection-For
proper wear and maximum tire life, rotate your
tires following the instructions in this manual. See
the
Index under Tires, Inspection G Rotation.
Check the tires for uneven wear or damage. If you
see irregular or premature wear, check the wheel
alignment. Check for damaged wheels also.
NOTE: To determine your engine’s displacement and code, see the Index under Engine Identification
* An Emission Control Service.
0 The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission warranty QY
limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all re\
commended maintenance services be
performed
at the indicated intervals and the maintenance be recorded in Section E: Maintenance Record.

Section B: Owner Checks & Services
Listed below are owner checks and services which should be Be sure any necessary repairs are completed at once.
made at the intervals specified to help ensure the safety, Whenever any fluids or lubricants are added to your vehicle,
dependability and emission control performance of your make sure they are the proper ones, as
shown in Section D.
vehicle.
At Each Fuel Fill (/t is important for you or a service station attendant to perform these underhood check\
s at each fuel fill.)
CHECK
OR SERVICE I WHAT TO DO
Engine Oil Level Check the engine oil level and add the proper oil if necessary. See the Index under Engine Oil for
further details.
Engine Coolant Level
See the
Index under Windshield Washer Fluid for further details.
Fluid Level Check the
windshield washer fluid level in the windshield washer
tank and add fluid if necessary. Windshield Washer
Check the engine coolant
level in the coolant recovery tank and add the proper coolant mix if
~~ ~ ~~
necessary. See the Index under Coolant for further details.
At Least Once a Month
CHECK
I OR SERVICE I WHAT TO DO
Tire Inflation
Check tire inflation. Make sure they are inflated to the pressures specified on the Tire-Loading
~~ ~
Information label located on the rear edge of the driver’s door. See the Index under Tires for
further details.
r
L
299

Index
326
Brake System Warning Light Anti-Lock Brake System
................. 99
Standard Brakes
............................... 98
Brakes. Anti-Lock
........................... 149
Warning Light
.................................. 99
Braking
in Emergencies ................... 153
Braking Technique ........................... 148
Break.Tn. New Vehicle
Normal Driving
............................... 54
When Towing a Trailer
.................. 177
Braking
............................................. 148
Buckling Up (see
Safety Belts)
Bulb Replacement
Center High-Mounted
Stoplight
.............................. 263. 280
Fog Lights
..................................... 249
Taillight
................................. 247. 280
Headlight
............................... 243. 280
Capacities and Specifications
....... 276
Carbon Monoxide
in Exhaust ............ 66
Cassette Tape Holder
........................ 83
Cassette Tape Player
(see
Audio Systems)
Center Lap Belts (see Safety Belts)
Chains. Tire ............................. 212. 258
Changing a Flat Tire
......................... 205
Checking Aim
of the Headlights .................... 241
Automatic Transaxle Fluid
............................................. 231
Brake Fluid
.................................... 238
Engine Coolant
............................. 235
Engine Oil
..................................... 226
Power Steering Fluid
.................... 237
Safety Belt Systems
.......................... 42
Things Under the Hood
................. 222
Child Restraints
.................................. 31
Children
............................................. 30
Cigarette Lighter
................................ 84
Circuit Breakers
& Fuses ................ 270
City Driving
..................................... 165
Cleaner, Air
.............................. 230, 283
Cleaning Aluminum Wheels
........................ 265
Antenna
......................................... 135
Cassette Player and Tapes
............ 134
Compact Discs
.............................. 135
Fabric .............................................. 260 Fiberglass Springs
......................... 268
Glass
............................................... 263
HUD (Head-Up Display)
............. 104
Inside
of Your Vehicle ................... 260
Leather and Vinyl
.......................... 262
Outside
of Your Vehicle ............... 265
Safety Belts
................................... 262
Special Problems
........................... 261
Underbody Maintenance
.............. 267
Warnings
........................................ 259
Weatherstrips
................................ 266
White Sidewall Tires
..................... 266
Windshield
.................................... 264
Clock, Setting the
............................. 118
Clusters. Instrument Panel ................ 90
Coin Holder ....................................... 83
Comfort Controls
Climate Control
.............................. 110
Electronic Climate Control
............ 113
Steering Wheel Touch Controls
.... 116
Ventilation ..................................... 111
Compact Disc Player
(see
Audio Systems)
Compact Spare Tire ......................... 211
Compartments, Storage
............... 83, 84