1997 Buick Riviera Owner's Manual - Page 319

Maintenance Schedule ?no Trin/Hiohwgv lhfinitinn I ,ring TridHiPhwav Tntervals = Follow this maintenance schedule if none of the only conditions from the Short Trip/City Maintenance if Schedule is true. Do not use this schedulethe vehicle in is used for trailer towing, driven a dusty area or used off paved roads. Use Short Trip/City schedule the for these conditions. Driving a vehicle with a f i l l y warmed engine under highway conditions causes engine oil to break down slower. Every 7,500 Miles (12 500 km): Engine Oil and Filter Change (or every12 months, whichever occurs first). Chassis Lubrication (or every 12 months, whichever occurs first). Tire Rotation. Every 30,000 Miles (50 000 km): Supercharger Oil Check (or every36 months, whichever occursfist) (3.8L Code 1 engine only). 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 (100 000 km): Engine Accessory Drive Belt Inspection. Every 100,000 Miles (166 km): Spark Plug Wire 000 Inspection. Spark Plug Replacement. Every 150,000 Miles (240 000 km): Cooling System Service (or every months, whichever occurs first). 60 These intervals only summarize maintenance services. Be sure to follow complete maintenance schedule on the the following pages. 7-6