Oldsmobile 1998 Aurora Owner's Manual page 338

Maintenance Schedule
90,000 Miles (150 000 km) (Continued)
0
0
Lubricate chassis components (or at each engine oil and filter change).
(See footnote #.)
Inspect throttle body bore and valve plates for deposits, open the throttle valve
and inspect all surfaces. Clean as required.
An Emission Control Service. (See footnotej-.)
Replace air cleaner filter.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket
for any damage. Replace parts as needed.
An Emission Control Service. (See footnote-)-.)
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote
+.)
97,500 Miles (162 500 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 *.)
0
Lubricate chassis components (or at each engine oil and filter change).
(See footnote
#.)
Rotate tires. See "Tire Inspection and Rotation" in the Index for proper
rotation pattern and additional information. (See footnote +.)
DATE
I
7-12