1994 Buick Park Avenue Owner's Manual - Page 244

Engine Oil Additives Don't add anything to your oil. Your Buick dealer is ready to advise if you think something should be added. If none of them is true, change the oil every 7,500 miles (12 500 km) or 12 months -- whichever comes first. Change the filter at the first oil change and at every other oil change after that. If the optional "Change Oil Soon" light comes onyou will need to change your oil sooner than either mileage specified. Depending upon driving habits, the "Change Oil Soon'' light may come on as early as 2,000 miles or less from the last time the oil life monitor was reset (See "Oil Life Monitor" in the Index.) Always reset the oil life monitor after every oil change. When to Change Engine Oil See if any one of these is true for you: Most trips are less than 4 miles (6 km). It's below freezing outside and most trips are less than 10 miles (16 km). The engine is at low speed most of the time (as in door-to-door delivery, or in stop-and-go traffic). 0 You tow a trailer often. Most trips are through dusty places. Engine Coolant Heater(Engine Block Heater) An engine coolant heater can be a big help if you have to park outside in very cold weather, 0°F (- 18"C) or colder. If your vehicle has this option, see "Engine Coolant Heater" in the Index. If any one of these is true for your vehicle, then you need to change your oil and filter every 3,000 miles (5 000 km) or 3 months -- whichever comes first. (See "Change Oil Soon" in the Index.) 242