Buick 2005 Park Avenue Owner's Manual page 344

45,000 Miles (75 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)
Replace passenger compartment air filter.
Inspect engine air cleaner filter. If necessary, replace
the filter. If vehicle is driven in dusty/dirty conditions,
inspect filter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-19 for more
information. An Emission Control Service.
(See footnote †.)
48,000 Miles (80 000 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 5-67 for proper rotation pattern and additional
information. (See footnote @.) (See footnote +.)
50,000 Miles (83 000 km)
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.
6-10
− In hilly or mountainous terrain.
− 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, change the fluid and filter at 100,000 miles
(166 000 km).
51,000 Miles (85 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)
54,000 Miles (90 000 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 5-67 for proper rotation pattern and additional
information. (See footnote @.) (See footnote +.)
57,000 Miles (95 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first). An Emission Control Service.
(See footnote *.)