1997 Buick Regal Owner's Manual - Page 359

I Short TripKity Maintenance Schedule I 54,000 Miles (90 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 51,000 Miles (85 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. (See footnote *.) k DATE ACTUAL MILEAGE SERVICED B Y DATE ACTUAL MILEAGE SERVICED B Y I I I I I 7-17