1997 Buick Skylark Owner's Manual - Page 329

I Long Trip/High ray MaintenanceSchedule 1 45,000 Miles (75 000 km) 0Change engineoil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 50,000 Miles (83 000 km) 0Change automatic transaxle fluid and filter if the vehicleis mainly driven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches O F 90 (32"C) or higher. - In hilly or mountainous terrain. - When doing frequenttrailer towing. - Uses such as found in taxi, police or delivery service. If you do not useyour vehicle under any of these conditions, thefluid andfilter not require do changing. Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote#.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. ++.) (See footnote+.) (Also see footnote DATE MILEAGE ACTUAL SERVICED BY: I I DATE I ACTUALMILEAGE ISERVICED BY: I I I I 7-32