1998 Oldsmobile 88 Owner's Manual - Page 294

Maintenance Schedule Short Trip/City Definiti a - Short Trip/City Intervals Every 3,000 Miles (5 000 km): Engine Oil and Filter first). Change (or3 months, whichever occurs Every 6,000 Miles (10 km): Chassis Lubrication 000 first). Tire Rotation. (or 6 months, whichever occurs Every 15,000 Miles(25 000 km): Air Cleaner Filter Inspection, if driving dusty conditions. in Every 30,000 Miles (50000 km): 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 (166000 km): Spark Plug Wire Inspection. Spark Plug Replacement. Every 150,000 Miles (240 000 km): Cooling System 60 Service (or every months, whichever occursfirst). These intervals only summarize maintenance services. Be sure to follow complete maintenance schedule the on the following pages. Follow the Short TripKity Maintenance Scheduleif any one of these conditionsis true for your vehicle: Most trips areless than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing. Most trips include extensive idling (suchas frequent driving in stop-and-go traffic). Most trips are through dusty areas. 0 You frequently tow a trailer or use a carrier on top of your vehicle. If the vehicle is used for delivery service, police,taxi or other commercial application. One o the reasonsyou should follow this schedule if f you operate your vehicle underany o these conditions f is that these conditions causeengine oil to break down sooney: