2010 Buick Lucerne Owner's Manual - Page 428

First Engine Oil Change After Every 40 000 km/25,000 Miles . First Engine Oil Change After Every 160 000 km/100,000 Miles . Fuel system inspection for damage or leaks. First Engine Oil Change After Every 80 000 km/50,000 Miles . Automatic transmission fluid change (normal service). See Automatic Transmission Fluid on page 6‑23. Spark plug replacement. An Emission Control Service. . Engine air cleaner filter replacement. See Engine Air Cleaner/Filter on page 6‑21. Automatic transmission fluid change (severe service) for vehicles mainly driven in heavy city traffic in hot weather, in hilly or mountainous terrain, when frequently towing a trailer, or used for taxi, police, or delivery service. See Automatic Transmission Fluid on page 6‑23. . First Engine Oil Change After Every 240 000 km/150,000 Miles . Engine cooling system drain, flush, and refill, cooling system and cap pressure check, and cleaning of outside of radiator and air conditioning condenser (or every 5 years, whichever occurs first). See Engine Coolant (4.6L Engine) on page 6‑27 or Engine Coolant (3.9L Engine) on page 6‑31. An Emission Control Service. Engine accessory drive belt inspection for fraying, excessive cracks, or obvious damage and replacement, if needed. An Emission Control Service. . 7-6