cooling Oldsmobile Aurora 1997 s User Guide

How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid to use. See “Recommended
Fluids and Lubricants” in the Index.
If the fluid level
is low, add only enough of the proper
fluid
to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough fluid at the
dipstick hole to bring it to
the proper level.
3. After adding fluid, recheck the fluid level as
described under “How to Check.”
4. When the correct fluid level is obtained, push the
dipstick back
in all the way.
Engine Coolant
The cooling s stem in your vehicle is filled with
DEX-COOL engine coolant. This coolant
is designed
to remain
in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX-COOL@ extended life coolant.
Lx
It doesn’t take much fluid, generally less than one pint The following explains
Your cooling system and how to
(0.5 L). Don’t overjill. add coolant when it is low. If you have a problem with
engine overheating, see “Engine Overheating” in
the Index.
NOTICE: A 50/50 mixture of water and DEX-COOL’
coolant will:
We recommend you use only fluid labeled
DEXRON’III, because fluid with that label is
made especially for your automatic transaxle.
Damage caused by fluid other than
DEXRON@III
is not covered by your new vehicle warranty.
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature,
Let the warning lights and gages work as
they should.

What to Use I
NOTICE:
When adding coolant, it is important that you use
only
DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL@ is added to
the system, premature engine, heater core or
radiator corrosion may result.
In addition, the
engine coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs
first. Damage caused by the use
of coolant other than DEX-COOL@ is not
covered by your new vehicle warranty.
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL@ coolant which
won’t damage aluminum
parts. If you use this mixture,
you don’t need to add anything else. A special procedure
is required for adding sealer; see the Aurora Service
Manual.
(To order a service manual, see “Service
Publications’’ in the Index.)
r =
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant
mix will. Your vehicle’s coolant warning
system
is set for the proper coolant mix. With
plain water or the wrong
mix, your engine could
get too hot but you wouldn’t get the overheat
warning. Your engine could catch fire and
you or
others could be burned. Use
a 50/50 mix of clean
water and DEX-COOL@ coolant.
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I
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t be covered by your
warranty. Too much water in the mix can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your retailer check your cooling system.
I NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
Checking Coolant
The engine coolant surge tank is located on the driver’s
side
of the engine compartment.
6-23
- ~.

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
Aurora model.
Using the wrong replacement wheels, wheel bolts
or wheel nuts on your vehicle can be dangerous.
It could affect the braking and handling of your
vehicle, make your tires lose air and make 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
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
See “Changing a Flat Tire” in the Index for
more information.
Used Replacement Wheels
Putting
a used wheel on your vehicle is
dangerous.
You can’t know how it’s been used or
how
far it’s been driven. It could fail suddenly
and cause an accident.
If you have to replace a
wheel, use a new GM original equipment wheel.
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Fuse
22
23
24
25
26
27 28
29 30
31
32
Usage
Trunk and Fuel Door Releases and
Trunk Pull Down
Electronic Level Control
Heated Seat, Instrument Panel
Exterior Lamps
Base@ Stereo (If so equipped)
Power Door Locks
Interior Lamps
Hazard Lamps, Stoplamps
Parking Lamps
Heated Outside Mirror
Open
Fuse
33
34
35
36
37
38
39
40
41 42
Usage
Fuel Door Release
Cooling Fan Relay
Battery Thermistor
Instrument Panel
-- Power Antenna,
Remote CD Changer, Radio Chassis
Instrument Panel
-- Remote
Accessory Power Module, Oil Level
Indicator, ALDL
Heated Seats
Fuel
Pump
Open
Rear Defog
2
Rear Defog 1
6-70

ENGINE COMPARTMENT
FUSE BLOCK
1 HORN
COOLING
FAN #2
COOLING
FAN #3
E
4
Fuse
4
5
6
7
8
9
10
11
12
13
14
Usage
Air Conditioning Center
Open
Open
Horn
Open
Fog Lamp
2
Cooling Fan #2
Cooling Fan #3
Cooling Fan
ABS Main
ABS Pump Motor
Fog Lamp
Horn
Open

Capacities and Specifications
The following approximate capacities are given in English and metric conversions. rlease refer to “Recommended
Fluids
and Lubricants” in the Index for more information.
Automatic Transaxle (Overdrive)
When draining or replacing torque converter, more fluid may be needed.
Pan Removal and Replacement ........................................... 6.5 quarts (6.0 L)
After Complete Overhaul ................................................. 10 quarts (9.5 L)
When pe~orming either transaxle procedure, check fluid level when done. More fluid may be needed.
Cooling System ....................................................... 13 quarts (12.0 L)
Engine Crankcase ...................................................... 7 quarts (6.6 L)
When changing filter, up to 0.5 quart (0.5 L) more oil may be needed.
Fuel Tank ......................................................... 19.4 gallons (73.4 L)
Windshield Washer
Fluid Tanks
...................................................... 3.8 quarts (3.6 L)
Power Steering
Pump Only ............................................................... 1 pint (0.5 L)
Complete System ....................................................... 1.5 pints (0.7 L)
Tire Pressures, Sizes ................................................... See Tire-Loading
Information label on driver’s door.
Wheel Nut Torque .................................................. 100 lb-ft (140 N-m)
Refrigerant (R-l34a),
Air Conditioning
........................................... See refrigerant charge label
under the hood.
NOTE: All capacities are approximate. When adding, be sure to fd to the appropriate level as recommended in this manual.
6-73

Maintenance Schedule
I Short Trip/City Definition I
Follow the Short Trip/City Maintenance Schedule if any
one of these conditions is true for your vehicle:
0
0
0
0
0
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such
as frequent
driving in stop-and-go traffic).
Most trips are through dusty areas.
You frequently tow a trailer or use a carrier on top of
your vehicle.
If the vehicle is used for delivery service, police, taxi
or other commercial application.
One of the reasons you should follow this schedule if
you operate your vehicle under any of these conditions
is that these conditions cause engine oil to break
down sooner.
Short Trip/City Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change (or
3 months, whichever occurs first).
(or
6 months, whichever occurs first). Tire Rotation.
Every 6,000 Miles (10 000 km): Chassis Lubrication
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Throttle Body Bore and Valve Plates
Inspection. Fuel Tank, Cap and Lines Inspection.
Service (severe conditions only).
Every 50,000 Miles (83 000 km): Automatic Transaxle
Every 60,000 Miles (100 000 km): Engine Accessory
Every 100,000 Miles (166 000 km): Spark Plug Wire
Every 150,000 Miles (240 000 km): Cooling System
Drive Belt
Inspection.
Inspection. Spark Plug Replacement.
Service (or every
60 months, whichever occurs first).
These intervals only summarize maintenance services.
Be sure
to follow the complete maintenance schedule on
the following pages.

Maintenance Schedule
I Long Trip/Highway Definition I
Follow this maintenance schedule only if none of the
conditions from the Short Trip/City Maintenance
Schedule is true.
Do not use this schedule if the vehicle
is used
for trailer towing, driven in a dusty area or used
off paved roads. Use the Short Trip/City schedule for
these conditions.
Driving a vehicle with a fully warmed engine under
highway conditions causes engine oil to break
down slower.
Long Trip/Highway Intervals
1
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
12 months, whichever occurs first).
Chassis Lubrication (or every
12 months, whichever
occurs first). Tire Rotation.
Every 30,000 Miles (50 000 km): Throttle Body Bore
and Valve Plates Inspection. Air Cleaner Filter
Replacement. Fuel Tank, Cap and Lines Inspection.
Every 50,000 Miles (83 000 km): Automatic Transaxle
Every 60,000 Miles (100 000 km): Engine Accessory
Service (severe conditions
only).
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Every 150,000 Miles (240 000 km): Cooling System
Inspection. Spark Plug Replacement.
Service
(or every 60 months, whichever occurs first).
These intervals only summarize maintenance services.
Be sure
to follow the complete maintenance schedule on
the following pages.

I Short Trip/City Maintenance Schedule I
- When doing frequent trailer towing.
- Uses such as found in taxi, police or
delivery service.
If you do not use your vehicle under any of
these conditions, the fluid and filter do not
require changing.
I I I 3
DATE
SERVICED BY ACTUAL MILEAGE
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system
(or every
60 months since last service,
whchever occurs first). See “Engine
Coolant” in the Index for what to use.
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test
cooling system and pressure cap.
An Emission Control Service.
DATE SERVICED BY ACTUAL MILEAGE
7-27