1998 Oldsmobile Cutlass Cooling system

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

1 Short TripKity Maintenance Schedule I
100,000 Miles (166 000 km) (Continued)
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.
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system (or every 60 months since last service,
whichever 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.
I DATE I
MILEAGE
7-18

Long Tripmighway Maintenance Schedule 1
100,000 Miles (1 66 000 ki
0 Inspect spark plug wires.
0 Replace spark plugs.
0 Change automatic transaxle fluid and filter if the vehicle is mainly driven
An Emission Control Service.
An Emission Control Service.
under one or more of these conditions:
- In heavy city traffic where the outside temperature regularly reaches 90°F
(32°C) or higher.
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
- Uses such as found in taxi, police or delivery service.
lf you do not use your vehicle under any of these conditions, the fluid and
filter do not require changing.
150,000 Miles (240 000 km)
0 Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See “Engine Coolant” in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service.
DATE I
MILEAGE
7-25

rrontTowing .................................. 5-10
Fuel
.......................................... 6-3
Filling
Your Tank .............................. 6-5
Gage
....................................... 2-60
In Foreign Countries
........................... 6-5
Fuses and Circuit Breakers
....................... 6-53
Gages Engine Coolant Temperature
.................... 2-54
Fuel
....................................... 2-60
GarmentHook
................................. 2-44
GAWR ....................................... 4-31
Gear Positions, Automatic Transaxle
................ 2- 18
GloveBox
.................................... 2-41
Gross Axle Weight Rating
........................ 4-31
Gross Vehicle Weight Rating ...................... 4-31
GVWR ....................................... 4-31
Halogen Bulbs
................................ 6-28
Hazard Warning Flashers
.......................... 5-2
Head Restraints
................................. 1-5
Bulb Replacement
............................ 6-28
High/Low Beamchanger ...................... 2-30
OnReminder
................................ 2-36
Wiring
..................................... 6-52
Hearing Impaired, Customer Assistance
.............. 8-4
Heating
........................................ 3- 4
Headlamps .................................... 2-36
High-BeamHeadlamps
.......................... 2-30 Highway Hypnosis
.............................. 4-22
HillandMountainRoads
......................... 4-22
Hitches. Trailer
................................. 4-35
Hood Checking Things Under
......................... 6-8
Release
...................................... 6-8
Horn ......................................... 2-28
Hydroplaning
.................................. 4-18
Ignition Positions
.............................. 2-14
Ignition Transaxle Lock Check
.................... 7-29
Illuminated EntryExit
........................... 2-38
Inflation, Tire
.................................. 6-35
Inside Daymight Rearview Mirror
................. 2-40
Inspections
.................................... 7-30
Brakesystem
................................ 7-30
Engine Cooling System
........................ 7-30
Exhaust System
.............................. 7-30
Front-Wheel-Drive Axle Boot
.................. 7-30
Front-Wheel-Drive Axle Seal
................... 7-30
Radiator and Heater Hose
...................... 7-30
Suspension
.................................. 7-30
Throttle System
.............................. 7-30
Instrumentpanel
............................... 2-46
Cleaning
.................................... 6-45
Cluster
..................................... 2-48
Fuse Block
........................ 6-53,6-54,6-5. 5
Intensity Control
............................. 2-38
Interior Lamps
................................. 2-38
Steering
.................................... 7-30
9-5