Buick Century 2003 Owner's Manual page 304

52,500 Miles (87 500 km)
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
60,000 Miles (100 000 km)
Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
Replace engine air cleaner filter. See Engine Air
Cleaner/Filter on page 5-18 for more information.
An Emission Control Service.
67,500 Miles (112 500 km)
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
6-8
75,000 Miles (125 000 km)
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 5-18 for more
information. An Emission Control Service. (See
footnote †.)
Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)
82,500 Miles (137 500 km)
Rotate tires. See Tire Inspection and Rotation on
page 5-60 for proper rotation pattern and additional
information. (See footnote .) (See footnote +.)