Buick 2003 Regal Owner's Manual page 309

82,500 Miles (137 500 km)
Ll Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote @.) (See footnote
+.)
90,000 Miles (150 000 km)
0 Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Control Service.
0
Replace engine air cleaner filter. An Emission
0 For supercharged engines only: Check the
supercharger oil level and add the proper
supercharger oil as needed (or every 36 months,
whichever occurs first). See Part D: Recommended
Fluids and Lubricants on page 6-15. An Emission
Control Service. (See footnote f.)
0
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote @.) (See footnote +.)
97,500 Miles (162 500 km)
C l Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote @.) (See footnote +.)
100,000 Miles (1 66 000 km)
0 Inspect spark plug wires. An Emission Control
0
Replace spark plugs. An Emission Control Service.
0
Change automatic transaxle fluid and filter if the
vehicle is mainly driven under one or more of
these conditions:
- In heavy city traffic where the outside
Service.
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.
0 If you haven't used your vehicle under severe service
conditions listed previously and, therefore, haven't
changed your automatic transaxle fluid, change both
the fluid and filter.
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 on page 5-24 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.
0 Inspect engine accessory drive belt. An Emission
Control Service.
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