1997 Buick Century Owner's Manual - Page 363

I Long Tripmighway Maintenance Schedule I 12 months, whichever occursfirst). 67,500 Miles (112 500 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 75,000 Miles (125 000 km) 0Change engine oil and filter (or every An Emission Control Service. 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) Replace passenger compartmentair filter. 17 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED BY: I I I DATE ACTUAL MILEAGE SERVICED BY: 1 7-33