1996 Buick Regal Owner's Manual - Page 300

Short TripKity Maintenance Schedule 45,000 Miles (75 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 48,000 Miles (80 000 km) 0Change engineoil and filter (or every 3 months, whichever occurs first). An Emission Control Service. Inspect air cleaner filter if you are driving in dusty conditions. Replacefilter if necessary. An Emission Control Service. 0Lubricate steering ball joints (or every 6 months, whichever occurs first). DATE ACTUAL MILEAGE SERVICED B Y DATE ACTUAL MILEAGE SERVICED B Y 7-14