1998 Buick Century Owner's Manual - Page 270

Before closing the hood, be sure all the filler caps areon properly. Then just pull the hood down and close it firmly. Engine Oil LOW OIL If the LOW OIL light on the instrument panel comes on, it means you need to check your engine oil level right away. For more information, see "Low Oil Level Light" in the Index. You should check your engine oillevel regularly; this is an added reminder. It's a good idea to check your engine oil every time you get fuel. In order to get an accurate reading, the oil must be warm and the vehicle must be on level ground. The engine oil dipstick handle is the yellow loop near the front of the engine. Turn off the engine and give the oil a few minutes to drain back into the oil pan. If you don't, the oil dipstick might not show the actual level. 6-10