1995 Buick Century Owner's Manual - Page 295

I Maintenance Schedule I1 0Drain, 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. 90,000 Miles (150 000 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. Lubricate the transaxle shift linkage, parking brake cable guides, underbody contact points and linkage. If equipped with grease fittings, lubricate the suspension and steering linkage (or every 12 months, whichever occurs first). 0Inspect engine accessory drive belt (or every 24 months, whichever occurs first). Replace spark plugs (except 2.2L Code 4 engine). An Emission Control Service. Inspect spark plug wires. Emission Control An Service. Service. 3' 0Replace air cleaner filter. An Emission Control (Continued) 7-35