1995 Buick Riviera Owner's Manual - Page 295

MaintenanceSchedule I 81,000 Miles (135 000 km) I 84,000 Miles (140 000 km) 17 Change engine oil and filter (or An Emission Control Service. 17 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. every 3 months, whichever occurs first). 0Lubricate the suspension and steering linkage, transaxle shift linkage, parking brake cable guides and the underbody contact points and linkage (or every 6 months, whichever occurs first). I DATE I ACTUAL MILEAGE ISERVICED BY: I 7-22