1998 Oldsmobile Cutlass engine oil

What to Use
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 anfthing else.
Adding only plain water to your coorrng 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 water and
DEX-COOL@ coolant.
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 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.
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Maintenance Schedule
I Short TripKity Definition I
Follow the Short TripKity Maintenance Schedule if any
one of these conditions
is true for your vehicle:
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 fiequent
driving in stop-and-go traffic).
0 Most trips are through dusty areas.
0 You frequently tow a trailer or use a carrier on top of
your vehicle.
If the vehicle is used for delivery service, police, taxi
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 soonex
or other commercial application.
Short TripKity Intervals
Every 3,000 Miles (5 000 km): Engine Oil and Filter
Change
(or 3 months, whichever occurs first).
Every 6,000 Miles (10 000 km): Tire Rotation.
Every 15,000 Miles (25 000 km): Air Cleaner Filter
Inspection, if driving in dusty conditions.
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel Tank, Cap and Lines Inspection.
Every 50,000 Miles (83 000 km): Automatic Transaxle
Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement.
Every 150,000 Miles (240 000 km): Cooling System
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.
7-5

Maintenance Schedule
Long Trip/Hig;hway Definition I 1 i
Follow this maintenance schedule only if none of the
conditions from the
Short TripKity 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 engirae oil
to break
down slower:
--
Every 7,500 Miles (12 500 km): Engine Oil and Filter
Change (or every
12 months, whichever occurs first).
Tire Rotation.
Every 30,000 Miles (50 000 km): Air Cleaner Filter
Replacement. Fuel
Tank, Cap and Lines Inspection.
Every 50,000 Miles (83 000 km): Automatic Transaxle
Service (severe conditions only).
Every 60,000 Miles (100 000 km): Engine Accessory
Drive Belt Inspection.
Every 100,000 Miles (166 000 km): Spark Plug Wire
Inspection. Spark Plug Replacement.
Every 150,000 Miles (240 000 km): Cooling System
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.
7-6

I Short TripKity Maintenance Schedule I
15,000 Miles (25 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
CI Inspect air cleaner filter if you are driving in dusty conditions.
An Emission Control Service.
Replace filter if necessary.
An Emission Control Service. (See footnotef.)
18,000 Miles (30 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
21,000 Miles (35 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
24,000 Miles (40 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
17 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information. (See footnote
+.)
I DATE I
DATE
DATE
I
1 MILEAGE ACTUAL I SERVICmBP.1
d
I
DATE
MILEAGE
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30,000 Miles (50 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
Cl Replace air cleaner filter.
0 Inspect~fuel tank, cap and lines for darnage or leaks. Inspect fuel cap gasket
An Emission Control Service.
An Emission
Control Service.
for any damage. Replace parts as needed.
An-Emission Control Service. (See footnote?.)
rotation pattern and additional information. (See footnote
+.)
0 Rotate tires. See “Tire kspection and Rotation” in the Index for proper
33,000 Miles (55 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
MILEAGE
DATE
I
MILEAGE
DATE
I
7-10

I Short TripKity Maintenance Schedule I
36,000 Miles (60 000 km)
Change engine oil and filter (or every 3 months, whichever occurs first).
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
39,000 Miles (65 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
42,000 Miles (70 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Rotate tires. See “Tire Inspection and Rotation’’ in the Index for proper
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
45,000 Miles (75 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs firstj.
[7 Inspect air cleaner filter if you are driving in dusty conditions.
An Emission Control Service.
Replace filter if necessary.
An Emission Control Service. (See footnote”f)
DATE I
DATE
DATE I
I MILEAGE ACTUAL I SERVICEDBY: I
DATE I
7-11

I Short Trip/City Maintenance Schedule I
54,000 Miles (90 000 km)
0 Change engine oil and filter (or every 3 months, whichever o ~ ~ ~ ~ __ .
0 Rotate tires. See “Tire Inspection and Rotation” in the Index lV+. proper
..
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
57,000 Miles (95 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
60,000 Miles (100 000 km)
17 Change engine oil and filter (or every 3 months, whichever occurs first).
0 Inspect engine accessory drive belt.
0 Replace air cleaner filter.
0 Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
An Emission Control Service.
An Emission Control Service.
An Emission Control Service.
for any damage. Replace parts as needed.
An Emission Control Service. (See footnoteT.)
rotation pattern and additional information. (See footnote
+.)
0 Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
DATE I
I MILEAGE ACTUAL I SERVICEDBY: I
I DATE I
MILEAGE
DATE
I
7-13
! I I
i

66,000 Miles (110 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
69,000 Miles (115 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs first).
An Emission Control Service.
72,000 Miles (120 000 km)
17 Change engine oil and filter (or every 3 months, whichever occurs fist).
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
An Emission Control Service.
rotation pattern and additional information. (See footnote +.)
DATE‘:
MILEAGE SERVICED BY:
:
DATE I
MILEAGE
ACTUAL SERVICED BY:
DATE I
MILEAGE
I I I
DATE I
MILEAGE
ACTUAL SERVICED BY:
7-14