2003 Cadillac DeVille Owner's Manual - Page 204

Oil Life Indicator Tc! see !he dlsp!ay, press the INFG buttor: s€?ve:al times until ENGINE OIL LIFE appears. If you see 99% ENGINE OIL LIFE, 99 percent of your current oil life remains. The DIC may display a CHANGE ENGINE OIL message. For more information, see Scheduled Maintenance on page 6-4. If you see CHANGE ENGINE OIL, it means the oil life is gone and you should change the oil right away. 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 on page 5-13. When the oil is changed, you'll need to reset the system. See Engine Oil on page 5-13. Always keep a written record of the mileage and date when you changed your oil. This feature lets you know when to change the engine oil. It's based on the engine oil temperatures and your driving patterns. 3-79