Oldsmobile 2003 Alero Owner's Manual page 310

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 (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 do not use your vehicle under any of these
conditions, the fluid and filter do not require changing.
52,500 Miles (87 500 km)
c3
Rotate tires. See Tire Inspection and Rotation on
page 5-55 for proper rotation pattern and additional
information. (See footnote
+.)
60,000 Miles (100 000 km)
0 Rotate tires. See Tire Inspection and Rotation on
page 5-55 for proper rotation pattern and additional
information. (See footnote +.)
0 Replace engine air cleaner filter. An Emission
Control Service.
67,500 Miles (1 12 500 km)
0 Rotate tires. See Tire Inspection and Rotation on
page 5-55 for proper rotation pattern and additional
information. (See footnote
+.)
75,000 Miles (125 000 km)
LI Inspect engine air cleaner filter if you are driving in
dusty conditions. Replace filter if necessary. An
Emission Control Service. (See footnote f.)
0
Rotate tires. See Tire Inspection and Rotation on
page 5-55 for proper rotation pattern and additional
information. (See footnote +.)
U
Rotate tires. See Tire Inspection and Rotation on
page 5-55 for proper rotation pattern and additional
information. (See footnote
+.)
6-7