1996 Buick Regal Owner's Manual - Page 296

I Short Trip/City Maintenance Schedule I 27,000 Miles (45 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 24,000 Miles (40 000 km) 17 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Lubricate steering ball joints (or every 6 months, whichever occurs first). DATE ACTUAL MILEAGE SERVICED BY: I I I DATE ACTUAL MILEAGE SERVICED BY: I I I 7-10