Buick 2004 Park Avenue - Manual (Page 367)

❑ 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 6-25. An Emission
Control Service. (See footnote †.)
❑ Rotate tires. See Tire Inspection and Rotation on
page 5-72 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
93,000 Miles (155 000 km)
❑ Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)
96,000 Miles (160 000 km)
❑ Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)
❑ Rotate tires. See Tire Inspection and Rotation on
page 5-72 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
99,000 Miles (165 000 km)
❑ Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)
100,000 Miles (166 000 km)
❑ Inspect spark plug wires. An Emission Control
Service.
❑ Replace spark plugs. An Emission Control Service.
❑ 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
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.
❑ 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)
❑ Drain, flush and refill cooling system (or every
60 months since last service, whichever occurs first).
See Engine Coolant on page 5-25 for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test cooling system and
pressure cap. An Emission Control Service.
❑ Inspect engine accessory drive belt. An Emission
Control Service.
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