1997 Buick Century Owner's Manual - Page 355

1 Short TripKity Maintenance Schedule I 100,000 Miles (166 000 km) 0Inspect spark plug wires. An Emission Control Service. 99,000 Miles (165 000 km) Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. Replace spark plugs. An Emission Control Sewice. 0Change automatic transaxle fluid and filter if the vehicle is mainlydriven under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches90°F (32°C) or higher. - In hilly or mountainous terrain. (Continued) DATE ACTUAL MILEAGE SERVICED BY: 7-25