1998 Buick LeSabre Owner's Manual - Page 131

If your vehiclehas the optional gagecluster, you can read your oil pressure directly from the gage on your instrument panel.A small lightto the left of the gage will come on if there is a problem with the engine oil pressure. Gage Cluster The oil light could come on briefly when you turn your key to RUN. It goes off once you turn it to START. That's just a checkto be sure the light works.If it so doesn't, be sureto have it fixed it will be there to warn you if something goes wrong. But, when this light comes on and stays on, it means oil isn't going through your engineproperly. You could be low on oil, or you might have some other problem. oil See your dealer for service. I A CAUTION: Don't keep driving if the oil pressure is low. If you do, your engine can become so hot that it catches fire. You or others could be burned. Check your oil as soon as possible and have your vehicle serviced. I NOTICE: Damage to your engine from neglected oil problems can be costlyand is not covered by your warranty. 2-67