Oldsmobile cutlass supreme 1996 Owner's Manual page 311

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Short Trip/City Maintenance Schedule
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81,000 Miles (135 000 km)
Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
1
84,000 Miles (140 000 km)
0
Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service.
DATE SERVICED BY: ACTUAL MILEAGE
6 months, whichever occurs first).
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DATE ACTUAL MILEAGE
7-21