1998 Cadillac DeVille Owner's Manual - Page 301

As shown in the chart, A E 1OW-30 is best for your S vehicle. However, youcan use S A E 5W-30 if it's going to be colder than F (16°C) before your next 60" oil very cold, you shoulduse SAE change. When it's 5W-30. These numbers an oil container showits on Do viscosity, or thickness. not use other viscosity oils, such asSAE 20W-50. Engine Oil Additives Don't add anything to your oil. Your dealer is ready to advise if you think something should be added. When to Change Engine Oil I Your vehicle has an Oil Life Indicator. This feature will let you know when to change yourand oil filter -- usually between 3,000 miles (5 km) and 000 7,500 miles (12500 km) since your lastoil change. NOTICE: Under severe conditions, the indicator come on may 000 Use only engine oil with the American Petroleum before 3,000 miles (5 km). Never drive your vehicle more than7,500miles (12 500 km) or Institute CertifiedFor Gasoline Engines 12 months (whichever occursfirst) without an "Starburst" symbol. Failure to use the oil change. recommended oil can result in engine damage not The system won't detect dustthe oil. So, if you in covered by your warranty. drive in a dusty area, be sure to change your oil every 000 3,000 miles (5 km) or sooner. Remember to reset GM Goodwrench@ oil meets the requirements for all the OilLife Indicator whenthe oil has been changed. your vehicle. For more information,see "Oil Life Indicator"in the Index. If you are in an area wherethe temperature falls below -20°F (-29"C), consider usingeither an SAE 5W-30 synthetic oil or anS A E OW-30 oil. Both will provide and easier cold starting better protectionfor your engine at extremely low temperatures. 6-14