1998 Chevrolet Prizm Owner's Manual - Page 241

As shown in the chart, SAE 5W-30 is best for your SAE 1OW-30 if it's going vehicle. However, you can use on to be 0"F (- 18 " C) or above. These numbers an oil container showits viscosity, or thickness. Do not use other viscosity oils, such as SAE 20W-50. Engine Oil Additives Don't add anything to your oil. Your dealer ready to is advise if you think something should be added. When to Change Engine Oil If any one of these is true you, use the short for tripkity maintenance schedule: 0 NOTICE: Use only engine oil with the American Petroleum Institute Certified For Gasoline Engines "Starburst" symbol. Failure to use the recommended oil can result in engine damage not covered by your warranty. GM Goodwrench@ oil meets all the requirements for your vehicle. If you are in an area where temperature falls the below -20°F (-29 "C), consider using either an SAE 5W-30 synthetic oilor an SAE OW-30 oil. Both will provideeasier cold starting and better protection for your engine at extremely low temperatures. Most trips are less than to 10 miles (8 to 16 k ) 5 m. This is particularly important when outside temperatures are below freezing. 0 Most trips include extensive idling (such as frequen driving in stop-and-go traffic). Most trips are through dusty areas. 0 0 You frequently tow a trailer or use a carrier on top o your vehicle. The vehicle is used delivery service, police, taxi for or other commercial application. 0 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 m or every 3,000 miles (5 000 k ) 3 months -- whichever occurs first. 6-15