1993 Buick LeSabre Owner's Manual - Page 284

Scheduled Maintenance Services Schedule I Follow Schedule I if your car is MAINLY driven underone .or moreof the following conditions: When most trips are less than 4 miles (6 kilometers). When most trips are less than 10 miles (16 kilometers) and outside temperatures remain below freezing. When most trips include extended idling and/or frequent low-speed operation as in stop-and-go traffic. Towing a trailer.*? When operating in dusty areas. Schedule I should also be followed if the car is used for delivery service, police, taxi or other commercial applications. I TO BE SERVICED (See Explanation of Scheduled Mzintenance Services Following Schedules I and 11) ~ ~~ ~~ I WHEN TO PERFORM Miles (kilometers) or Months, Whichever Occurs First Every 3 000 mi. (5000 km) or 3 months. ~~ MILES (000) ~ ~ ~~ 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 KILOMETERS (000) 5 e 10 . e e e e Item No. 1. Engine Oil & Oil Filter Change* 2. Chassis Lubrication 20 25 e . 30 35 m e 40 45 e m 50 m e 55 e Every other oil change At 6 000 mi. (10 000 km) e e e 3. Throttle Body Mounting Bolt Torque* 4* Tire & Rotation Inspection & only At 6 every 15( 000 mi.km) and then 000 mi. 10 000 (25 000 km) or as necessary Every 30 000 mi. (50 000 km) or 24 months. 5. Engine Accessory Drive Belt(s) Inspection* e 282