1997 Buick Century Owner's Manual - Page 335

Maintenance Schedule Short TripKity Definition Follow the ShortTrip/City Maintenance Scheduleif any one of these conditions is true for your vehicle: 0 Short Trip/City Intervals Every 3,000 Miles(5 000 km): Engine Oil and Filter Change (or 3 months, whichever occurs first). Every 6,000 Miles(10 000km): Tire Rotation. Every 12,000 Miles 000 Jan): Passenger (20 Compartment Air Filter Replacement. Every 15,000 Miles (25000 km): Air Cleaner Filter Inspection, if driving in dusty conditions. Every 30,000 Miles (50 000 k ) Air Cleaner Filter m: Replacement. FuelTank, 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 (166000 km): Spark Plug Wire 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 maintenance schedule on the following pages. -7-5 I I Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures arebelow freezing. driving in stop-and-go traffic). a Most trips include extensive idling (such as frequent 0 Most trips are through dusty areas. your vehicle. a You frequently tow a trailer or a carrier on top of use a If the vehicle is used for delivery service, police, taxi or other commercial application. One of the reasons you should follow this schedule i you operate your vehicle under anyof these conditions f is that these conditions cause engine oil to break down sooney.