Buick 1998 Century Owner's Manual page 330

I
Maintenance Schedule
I
45,000 Miles (75 000 km)
0
Check Oil Life Monitor. If engine oil and filter are changed, reset monitor. See
"Engine Oil" in the Index.
An Emission Control Service. (See footnote
*.)
necessary.
An Emission Control Service. (See footnote
"F)
0
Inspect air cleaner filter if you are driving in dusty conditions. Replace filter if
0
Replace passenger compartment air filter.
0
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote
+.)
50,000 Miles (83 000 km)
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 temperature regularly reaches 90°F
- In hilly or mountainous terrain.
- When doing frequent trailer towing.
-
Uses such as found in taxi, police or delivery service.
I f you do not use your vehicle under any of these conditions, the fluid and
filter do not require changing.
(32°C) or higher.
7-8