1997 Buick Regal Owner's Manual - Page 351

I Short Trip/City Maintenance Schedule I 12,000 Miles (20 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) 0Replace passenger compartment air filter. 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 9,000 Miles (15 000 km) Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote * .) DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED BY: 7-9