1998 Buick Century Owner's Manual - Page 329

I MaintenanceSchedule I CI Rotate tires. See"Tire Inspection and Rotation" in the Index for proper +.) rotation patternand additional information. (See footnote 30,000 Miles (50 000 km) 0 Check Oil LifeMonitor. If engine oiland filter are changed, reset monitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote*.) 0 Replace passenger compartment air filter. E Rotate tires. See"Tire Inspection and Rotation" in the Index for l proper rotation patternand additional information. (See footnote +.) I7 Replace air cleanerfilter. An Emission Control Service. Inspect fueltank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace partsas needed. An Emission Control Service. (See footnote?.) I DATE MILEAGE I 37,500 Miles (62 500 km) 0 Check Oil LifeMonitor. If engine oiland filter are changed, resetmonitor. See "Engine Oil" in the Index. An Emission Control Service. (See footnote*.) 0 Rotate tires. See"Tire Inspection and Rotation" in the Index for proper rotation patternand additional information. (See footnote +.) DATE MILEAGE I