1995 Buick Riviera Owner's Manual - Page 286

I MaintenanceSchedule I 1 39,000 Miles (65 000 k t ) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 36,000 Miles (60 000 km) 17 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 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 I I 1 DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED BY. 7-13