1999 Oldsmobile Silhouette tire pressure

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6-39
Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service, see
your Oldsmobile Warranty booklet for details.
CAUTION:
Poorly maintained and improperly used tires
are dangerous.

Overloading your tires can cause
overheating as a result of too much friction.
You could have an air
-out and a serious
accident. See ªLoading Your Vehicleº in
the Index.
CAUTION: (Continued)
CAUTION: (Continued)

Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.

Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires at the recommended pressure.

Worn, old tires can cause accidents. If your
tread is badly worn, or if your tires have
been damaged, replace them.

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6-40 Inflation -- Tire Pressure
The Certification/Tire label, which is on the rear edge of
the driver's door, shows the correct inflation pressures
for your tires when they're cold. ªColdº means your
vehicle has been sitting for at least three hours or driven
no more than 1 mile (1.6 km).
NOTICE:
Don't let anyone tell you that underinflation or
overinflation is all right. It's not. If your tires
don't have enough air (underinflation), you can
get the following:

Too much flexing

Too much heat

Tire overloading

Bad wear

Bad handling

Bad fuel economy.
NOTICE: (Continued)
NOTICE: (Continued)
If your tires have too much air (overinflation),
you can get the following:

Unusual wear

Bad handling

Rough ride

Needless damage from road hazards.
When to Check
Check your tires once a month or more.
Don't forget your compact spare tire. It should be at
60 psi (420 kPa).
How to Check
Use a good quality pocket
-type gage to check tire
pressure. You can't tell if your tires are properly inflated
simply by looking at them. Radial tires may look
properly inflated even when they're underinflated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt
and moisture.

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6-41 Tire Inspection and Rotation
Tires should be rotated every 6,000 to 8,000 miles
(10 000 to 13 000 km). Any time you notice unusual wear,
rotate your tires as soon as possible and check wheel
alignment. Also check for damaged tires or wheels. See
ªWhen It's Time for New Tiresº and ªWheel
Replacementº later in this section for more information.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The first
rotation is the most important. See ªScheduled
Maintenance Servicesº in the Index for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.Don't include the compact spare tire in your
tire rotation.
After the tires have been rotated, adjust the front and
rear inflation pressures as shown on the
Certification/Tire label. Make certain that all wheel nuts
are properly tightened. See ªWheel Nut Torqueº in
the Index.
CAUTION:
Rust or dirt on a wheel, or on the parts to which
it is fastened, can make 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
ªChanging a Flat Tireº in the Index.)

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6-64
Engine Crankcase - Oil
and Filter Change4.5 quarts (4.3 L) . . . . . . . . . . .
Fuel Capacity
Standard/Regular 19.8 gallons (75.0 L). . . . . . . . . . . .
Optional/Extended 24.3 gallons (92.0 L). . . . . . . . . . .
Refrigerant,
Air Conditioning*See the Refrigerant . . . . . . . .
Label under the hood.
Tire Pressures,
SizesSee Tire
-Loading . . . . . . . . . . . . . . . . . . . . .
Information label on driver's door.
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Windshield Washer Fluid1 gallon (0.37 L) . . . . . . .
*See Air Conditioning Refrigerants later
in this section.
NOTE: All capacities are approximate. When adding, be
sure to fill to the appropriate level, as recommended in
this manual.
Engine Specifications
Engine VIN Code E. . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Type V6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . . . .
Horsepower 185. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat Temperature
Specification 195
F (91
C) . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used.
If you're not sure, ask your dealer.

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7-30
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant to
perform these underhood checks at each fuel fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See ªEngine Oilº in the Index for
further details.
Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the Index
for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
See ªTiresº in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.

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9-6
Inspections
Brake System 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust Systems 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Boot and Seal 7-34 . . . . . . . . . . . . . . . . . .
Radiator and Heater Hose 7-34 . . . . . . . . . . . . . . . . . . . . . .
Steering 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle System 7-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel 2-84 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster 2-86 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light Intensity Control 2-63 . . . . . . . . . . . . . . . . . . . . . . . . .
Switchbank 2-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior Lamps 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Override Switch 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack, Tire 5-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key in the Ignition 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinders Service 7-31 . . . . . . . . . . . . . . . . . . . . . .
Keys 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels
Certification/Tire 4-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-55 . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information 4-29 . . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-55 . . . . . . . . . . . . . . . . . . .
Lamps
Cargo 2
-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Illumination 2-65 . . . . . . . . . . . . . . . . . . . . . . . . . .
Dome 2-66 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exit Lighting 2
-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior 2-61 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illuminated Entry 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Reminder 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Last Door Closed Locking 2-6 . . . . . . . . . . . . . . . . . . . . . . . . .
Last Door Closed Locking and Lockout Prevention 2-16 . . . .
Leaving Your Vehicle 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle with the Engine Running 2-49 . . . . . . .
Liftgate 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lighter 2-79 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lights
Air Bag Readiness 1
-40, 2-89 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-91, 4-7 . . . . . . . . . . . .
Brake System Warning 2-90, 6-28 . . . . . . . . . . . . . . . . . . . .
Charging System Indicator 2-90 . . . . . . . . . . . . . . . . . . . . . .
Check Engine 2-95 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Ajar 2-99 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Warning 2-94 . . . . . . . . . . . . .
Low Coolant Warning 2-95, 6-24 . . . . . . . . . . . . . . . . . . . .
Low Fuel Warning 2-101 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Oil Level 2-100, 6-11 . . . . . . . . . . . . . . . . . . . . . . . . .
Low Traction 2-93, 4-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure 2-98 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PASS-Key
III Security 2-99 . . . . . . . . . . . . . . . . . . . . . . .
Power Sliding Door Warning Light 2-99 . . . . . . . . . . . . . . .
Safety Belt Reminder 1-24, 2-92 . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-95 . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction Control System Warning 2-92, 4-10 . . . . . . . . . . .
Loading Your Vehicle 4-29 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lockout Deterrent 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .