1997 Buick Skylark Owner's Manual - Page 305

I ShortTrip/CityMaintenanceSchedule I 6,000 Miles (10 000 km) 0Change engineoil and filter (or every 3 months, whichever oca An Emission ControlService. ; first). 3,000 Miles (5 000 km) 0Change engineoil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Lubricate chassis components (or every 6 months, whichever occurs first). (See footnote#.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index proper rotation for pattern and additional information. (See footnote+.) 7-8