1995 Buick Riviera Owner's Manual - Page 302

MaintenanceSchedule I1 30,000 Miles (50 000 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. ~ 0Inspect spark plug wires. An Emission Control Service. T [7 Replace air cleaner filter. An Emission Control Service. 0Lubricate the suspension and steering linkage, transaxle shift linkage, parkmg brake cable guides and the underbody contact points and linkage (or every 12 months, whichever occurs first). 0Inspect engine accessory drive belt (or every 24 months, whichever occurs first). An Emission Control Service. Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. 0For supercharged engines only: Check the supercharger oil level and add oil as needed (or every 36 months, whchever occurs fist). See "Recommended Fluids and Lubricants'' in this section. An Emission Control Service. T DATE ACTUAL MILEAGE SERVICED BY: Drain, flush and refill cooling system (or every 24 months, whichever occurs first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. C Replace spark plugs. Emission Control Service. I An