1996 Buick LeSabre Owner's Manual - Page 239
1996 Buick LeSabre Manual
Page 239 highlights
Checking Engine Oil Pull out the dipstickand clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level. When to Add Oil If the oil is at or below the ADD mark, then you'll need to add some oil. But you must usethe right kind. This part explains what kind of oil to use. For crankcase capacity, see "Capacities and Specifications" in the Index. I NOTICE: Don't add too much oil. If your engine hasso much oil that theoil level gets above the cross-hatched area thatshows the proper operating range, your engine could be damaged. The engineoil fill cap is behind the engine oildipstick and engine fans. Just fill it enough to put the level somewhere in the proper operatingrange. Push the dipstick all the way back in when you're through. 6-11