1993 Buick Roadmaster Owner's Manual - Page 304

Scheduled Maintenance Services Schedule I Follow Schedule'Iif your car is MAINLY driven under one or more of the following conditions: 0 When most trips are less than 4 miles (6 kilometers). e -Whenmost tripsare'less than 10 miles (16 kilometers) and outside temperatures remain below freezing. .e When mosttrips include extended idling and/oi- frequent low-speed operation as in stop-and-go traffic. e Towing a trailer.*? 0 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. TO~BE SERVICED (See Explanation of Scheduled Maintenance Services Following Schedules I and 11j WHEN TO PERFORM Miles (kilometers) or Months, Whichever Occurs First LO 10 15 20 25 Every 3 000 mi. (5000 km) or 3 months. 0 MILES (000) I 60 65 0 . KILOMETER; 000) 35 0 I I 40 45 0 0 50 55 0 0 1. Engine Oil & Oil Filter Change* 2. Chassis Lubrication 3. Throttle Body Mounting Bolt Torque* 4. Tire 8 L Rotation I Every other oil change At 6 OQd)..mi,~10~000 km) 0 0 I . 0 0 0 a I Inspection ' At 6,000mi. (10 000 km)and then every 15 000 mi. (25 000 km) or as necessary (50 000 km) or 24 months. 0 0 0 5. Engine Accessory Drive Belt(s) Inspection" Every 30 000 mi. 0 302