1998 Buick Century Owner's Manual - Page 332

I Maintenance Schedule I MILEAGE 67,500 Miles (112 500 km) 0 Check Oil Life Monitor. If engine oil and filter are changed,reset monitor. See "Engine Oil" in the Index. An Emission Control Sewice. (See footnote *.) Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote+.) 75,000 Miles (125 000 km) 0 Check Oil Life Monitor. If engine-oil and filter arechanged, reset monitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote *.) Inspect air cleaner filter if you are drivingin dusty conditions. Replace filter if necessary. An Emission Control Sewice. (See footnoteT.) 0 Replace passenger compartment air filter. 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote+.) DATE ACTUAL MILEAGE I SERVICED BY: 82,500 Miles (137 500 km) 0 Check Oil Life Monitor. If engine oil and filter arechanged, reset monitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote*.) I DATE I ACTUAL MILEAGE I SERVICEDBY: I 7-10