1996 Chevrolet Blazer Owner's Manual - Page 260

When to Change Engine Oil See if any one of these is truefor you: e Most trips are less than 5 to 10 miles (8 to 16 km), Remote Oil Filter (Four-Wheel Drive) The access door for the remoteoil filter is in the steering linkage shield assembly located under the radiator support. Twist the screw to unlock or lock the door. This is particularly important when outside temperatures are below freezing. 0 What to Do with Used Oil Did you know that used engine oil contains certain elements that may be unhealthy for your skin and could even cause cancer? Don't let used oil stay on your skin for very long. Clean your skin and nails with soap and water, or a good hand 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 threat 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 iton the ground, into sewers, or into streams or bodies of water. Instead, recycle it by taking it to a place that collects usedoil. If you have a problem properly disposing of your used oil, ask your dealer,a service station or a local recycling center for help. Most trips include extensive idling (such as frequent driving in stop-and-go traffic). 0 You operate your vehicle in dusty areas off-road or frequently. your vehicle. e You frequently tow a trailer or use a carrier on top of e The vehicle is usedfor delivery service, police, taxi or other commercial application. Driving under these conditions causes engine oil to break down sooner.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 occurs first. If none of them is true,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 highway conditions causes engine oil to break down slower. 6-12