1999 Oldsmobile Cutlass engine overheat

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6-19
A 50/50 mixture of clean, drinkable water and
DEX
-COOL
coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.
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.
What to Use
Use a mixture of one-half clean, drinkable water and
one
-half DEX-COOL coolant which won't damage
aluminum parts. If you use this coolant mixture, you
don't need to add anything else.
CAUTION:
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 mixture will. Your vehicle's coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
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 mixture of clean, drinkable water and
DEX
-COOL coolant.

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6-20
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn't be covered by your
warranty. Too much water in the mixture 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 dealer check your cooling system.
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 surge tank is located on the passenger's side of the
engine compartment.

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9-4
Driving
City 4
-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defensive 4
-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drunken 4
-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Freeway 4
-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In a Blizzard 4
-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Foreign Countries 6
-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
In the Rain 4
-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Night 4
-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Curves 4
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
On Grades While Towing a Trailer 4
-38 . . . . . . . . . . . . . . .
On Hill and Mountain Roads 4
-22 . . . . . . . . . . . . . . . . . . . .
On Snow and Ice 4
-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Through Water 4
-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wet Roads 4
-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winter 4
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
With a Trailer 4
-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drunken Driving 4
-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Equipment, Adding 2-17, 3-22, 6-55 . . . . . . . . . .
Electrical System 6
-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine 6
-10, 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant 6
-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Heater 2
-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Level Check 7
-26 . . . . . . . . . . . . . . . . . . . . . . . . . .
Coolant Temperature Gage 2
-56 . . . . . . . . . . . . . . . . . . . . .
Exhaust 2
-10, 2-28, 4-27 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6
-59, 6-60, 6-61 . . . . . . . . . . . . . . . . . . . . . . . . Identification 6
-54 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Level Check 7
-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating 5
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Running While Parked 2
-28 . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 6
-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your 2
-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Oil 6
-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding 6
-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additives 6
-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking 6
-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Warning Light 2
-59 . . . . . . . . . . . . . . . . . . . . . . . .
Used 6
-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
When to Change 6
-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Oil, What Kind to Use 6
-14 . . . . . . . . . . . . . . . . . . . . .
Exterior Lamps 2
-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fabric Cleaning 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling a Portable Fuel Container 6
-7 . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6
-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filter, Air 6
-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Care 6
-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Finish Damage 6
-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
First Gear, Automatic Transaxle 2
-22 . . . . . . . . . . . . . . . . . . .
Flashers, Hazard Warning 5
-2 . . . . . . . . . . . . . . . . . . . . . . . . .
Flash
-to-Pass 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flat Tire, Changing 5
-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluids and Lubricants 7
-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-7
Maintenance, Normal Replacement Parts 6-63 . . . . . . . . . . .
Maintenance Record 7
-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7
-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 7
-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long Trip/Highway Definition 7
-6 . . . . . . . . . . . . . . . . . . .
Long Trip/Highway Intervals 7
-6 . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7
-26 . . . . . . . . . . . . . . . . . . . . .
Periodic Maintenance Inspections 7
-30 . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7
-31 . . . . . . . . . . . . .
Scheduled Maintenance Services 7
-4 . . . . . . . . . . . . . . . . . .
Selecting the Right Schedule 7
-4 . . . . . . . . . . . . . . . . . . . . .
Short Trip/City Definition 7
-5 . . . . . . . . . . . . . . . . . . . . . . .
Short Trip/City Intervals 7
-5 . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance, Underbody 6
-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Trailer Towing 4
-40 . . . . . . . . . . . . . . . . .
Making Turns with a Trailer 4
-37 . . . . . . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp 2
-57 . . . . . . . . . . . . . . . . . . . . . .
Manual Front Seat 1
-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual Remote Control Mirror 2
-42 . . . . . . . . . . . . . . . . . . . .
Methanol 6
-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirror Reading Lamps 2
-41 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirrors 2
-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Convex Outside 2
-43 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside Day/Night Rearview 2
-42 . . . . . . . . . . . . . . . . . . . . .
Manual Remote Control 2
-42 . . . . . . . . . . . . . . . . . . . . . . . .
Outside 2
-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Remote Control 2
-43 . . . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity 2
-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mobility Program 8
-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mountain Roads 4
-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multifunction Lever 2
-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net, Convenience 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Neutral, Automatic Transaxle 2
-19 . . . . . . . . . . . . . . . . . . . . .
New Vehicle ªBreak
-Inº 2-13 . . . . . . . . . . . . . . . . . . . . . . . . .
Night Vision 4
-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer 2-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer, Trip 2
-51 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Off
-Road Recovery 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil, Engine 6
-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure Warning Light 2
-59 . . . . . . . . . . . . . . . . . . . . . . .
Outside Mirror 2
-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overheating Engine 5
-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7
-26 . . . . . . . . . . . . . . . . . . . . . . .
Owner Publications, Ordering 8
-10, 8-11, 8-12 . . . . . . . . . . .
Paint Spotting, Chemical 6-52 . . . . . . . . . . . . . . . . . . . . . . . .
Park
Shifting Into 2
-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting Out of 2
-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Park, Automatic Transaxle 2
-19 . . . . . . . . . . . . . . . . . . . . . . . .
Parking
At Night 2
-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake 2
-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake Mechanism Check 7
-29 . . . . . . . . . . . . . . . . . . . . . . .