1998 Buick Park Avenue Owner's Manual - Page 290

If none of them is true, use the %ong triphighway maintenance schedule. Change the oil and filter every 7,500 miles (12 500 km) or 12 months -- whichever occurs h t . Driving a vehicle with a fully warmed engine under highway conditions causes engine oil to $re& down dower. If any one of these is true for you, use the short tripkity maintenance schedule: Most trips are less than 5 to 13 miles (8 to I 6 km). This is particularly important when outside temperatures are below freezing. 8 Most trips include extensive id1ir.g (such as frequent $riving in stop-and-go traffic). Most trips are though dusty areas. You frequently tow a trailer or use a carrier on top of your vehicle. Did you know that used engine oilcontains certain ekmer,ts that may be unhealthy for your skin and csdd even cause cancer? Don't let used oil stay on your skin for very iong. Clean your skin and nails with soap and water, or a good hznd cleaner. Wash or properly throw away clothing or rags containing used engine oil. (See the manufacturer's warnings about the use and disposal of oil products.) Used oil can be a real t-heat to the environment. If you change your own oil, be sure to drain all free-flowing oil from the filter before disposal. Don't ever dispose of oil by putting it in the trash, pouring it on the ground, into sewers, or into streamsor bodies of water. Instead, The vehicle is used for delivery service, police, taxi or other commercial application. Driving under these conditions causes engine oil to break down sooner. Hf any m e of these is true for your vehicle, then YOU need to change your si1 and filter every 3,000 miles (5 000 km)or 3 months -- whichever occurs k t . (See Engine Oil Life Monitor (Index) in the Index.1 recycle it by taking it to a place that coilects used oil. If you have a problem properly disposing of your used oil, ask your dealer, a service station or a local recycling center for kelp.