1997 Buick Regal Owner's Manual - Page 348

Maintenance Schedule Follow this maintenance schedule onlyif none of the conditions fromthe Short TripKity Maintenance Schedule is true. Do not use this schedule if the vehicle is used for trailer towing, driven in a dusty area or used off paved roads. Use the Short Trip/City schedule for these conditions. Driving a vehicle with a fidly warmed engine under highway conditions causes engine to break oil down slowex Every 7,500 Miles (12 500 km): Engine Oil and Filter Change (or every 12 months, whichever occurs first). Tire Rotation. Every 15,000 Miles (25 000 km): Passenger Compartment Air Filter Replacement. Every 30,000 Miles (50 000 km): Supercharger Oil Check (or every 36 months, whichever occurs first) (3.8L Code 1 engineonly). Air Cleaner Filter Replacement. Fuel Tank, Cap and Lines Inspection. Every 50,000 Miles (83 000 km): Automatic Transaxle Service (severe conditions only). Every 60,000 Miles (100 km): Engine Accessory 000 Drive Belt Inspection. Every 100,000 Miles (166 krn): Spark Plug Wire 000 Inspection. Spark Plug Replacement. Every 150,000 Miles (240 000 km): Cooling System Service (orevery 60 months, whichever occurs first). These intervals only summarize maintenance services. Be sure to follow the complete nzaintenance schedule on the following pages. 7-6