1995 Buick Century Owner's Manual - Page 265

Maintenance Schedule Schedule I1 I I Intervals Follow Schedule I1 0 1 d y if none of the conditions from Schedule I is true. I Schedule I1 Intervals Every 7,500 Miles (12 500 km) Engine Oil and Filter Change (or every 12 months. whichever occurs first) Chassis Lubrication (or every 12 months, whichever occurs first) At 7,500 Miles (1 2 500 km) Then Every 15,000 Miles (25 000 km) Tire Rotation Every 30,000 Miles (50 000 km) Engine Accessory Drive Belt Inspection (or every 24 months, whichever occurs first) Cooling System Service (or every 24 months. whichever occurs first) Spark Plug Replacement (Except 2.2L Code 4 engine) Spark Plug Wire Inspection Exhaust Gas Recirculation (EGR) System Inspection (2.2L Code 4 Engine Only) Air Cleaner Filter Replaccmcnt Fuel Tank. Cap and Lines Inspection Every 50,000 Miles (83 000 km) Automatic Transaxle Service (severe conditions only) Every 100,000 Miles ( 166 000 km) Spark Plug Replacement (2.2L Code 4 engine only) - 7-5