1998 Chevrolet Express Van Owner's Manual - Page 255

If none of themis true, use the long trip/highway maintenance schedule. Change the oil and filter every 7,500 miles (12 500 km) or 12 months -- whichever occurs first. Driving a vehicle with a fully warmed engine under highwayconditions causes engine oil to break down slower. Air Cleaner (Gasoline Engines) What to Do with Used Oil Did you know that usedengine oil contains certain elements that maybe unhealthy for your skin and could on even cause cancer? Don't let used oil stay your skin for very long. Clean your skin and nails with and soap water, or a good hand cleaner. Wash properly throw or 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 threat the environment. If you to 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 streams or bodies of water. Instead, recycle it by taking itto a place that collects used oil. If you havea problem properlydisposing of your usedoil, ask your dealer, a service station a local recycling or center for help. To remove the air cleaner filter: 1. Loosen the screw bolt to air induct hose. 2. Remove the three bolts holding the air cleaner housing in place. 3. Remove the full air housing. 4. Unsnap the three clips. Then tilt the top cover up and back to expose the filter element. 6-