1996 Buick Skylark Owner's Manual - Page 294

? Maintenance Schedule Long Trip/Highway Definition Follow this maintenance schedule only if none of the conditions from the Short Trip/City Maintenance Schedule is true. Driving a vehicle with a fully warmed engine under highway conditions causes engine oil break down to slower. I Long Trip/Highway Intervals Every 7,500 Miles (12500 km): Engine Oil and Filter Change (or every 12 months, whicheverOCCUTS first). 12 Chassis Lubrication (or every months, whichever occurs fhst). At 7,500 Miles (12 500 km) Then Every 15,000 'Miles(25 000 km): Tire Rotation. Every 30,000 Miles (50 000 km): Air Cleaner Filter Replacement. Fuel Tank, Cap and Lines Inspection. .Every50,000 Miles (83 000 km): Automatic Transaxle Service (severe conditions only). Every 60,000 Miles (100000 km): Engine Accessory Drive Belt Inspection. Every 100,000 Miles (166 km): Cooling System 000 Service (or every60 months, whichever occurs first). Spark Plug Wire Inspection. Spark Plug Replacement. These intervals only summarize maintenance services. Be sure to follow complete maintenance schedule on the the following pages. - 7-5