1997 Buick Century Owner's Manual - Page 360

37,500 Miles (62 500 km) 0Change engine oil and filter (or every 12 months, whichever occursfirst). An Emission Control Service. 45,000 Miles (75 000 km) 0Change engine oil and filter (or every 12 months, whichever occursfirst). An Emission Control Service. 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 0Replace passenger compartment air filter. 0Rotate tires. See "Tire Inspection and Rotation'' in the Index proper rotation for pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED B Y R