1998 Cadillac DeVille Owner's Manual - Page 167

Oil Life 1 iicator The Driver Information Center (DIC) may display a CHANGE ENGINE OIL message. Always keep a written recordof the mileage anddate when you changed your oil. For more information, see the Maintenance Schedule booklet. If you see CHANGE ENGINE OIL, it means that you have less than 10 percent of the oil life left and you should consider changing your engine oil. The system should indicate changing the oil between 3,000 miles (5 000km) and 7,500 miles (12 500 km). It may indicate changing the before 3,000 miles oil m depending on your driving habits. the If (5 000 k ) (12 vehicle has been driven 7,500 miles 500 km), it will indicate to change the If you drive in a dusty area, you oil. r) should change youroil every 3,000 miles (5 000 kn or three months (whichever comes first) unless the display indicates changing it sooner. The system doesn't check how much oil you have,so you'll still have to check for that. To see how, see "Engine Oil" in the Index. ' When the oil is changed, you'll need to reset the system. To reset, display the Oil Life Indicator by pressing the INFORMATION (INFO) button. Then press and hold 100%OIL the RESET button until the display shows LIFE LEFT. This feature lets you know when to change the engine oil. It's based on the engine oil temperatures and your driving patterns.To see the display, press the INFORMATION (INFO) button untilXX OIL LIFE LEFT appears.If you see 99% OIL LIFE LEFT, 99 percent of your current oil life remains.