1995 Buick Regal Owner's Manual - Page 289

I MaintenanceSchedule I I 84,000 Miles (140 000 km) 0Change engineoil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 81,000 Miles (135 000 km) Change engineoil and filter (or every 3 months, whichever occurs first). An Emission Control Service. c Lubricate the shift linkage, parking brake ] cable guides, underbody contact pointsand linkage (or every 6 months, whichever occurs first). DATE ACTUAL MKEAGE SERVICED B Y DATE ACTUAL MILEAGE SERVICED B Y 7-21