2001 Buick Regal Owner's Manual - Page 265

Engine Oil If the LOW OIL light appears on the instrument panel, 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 oil level regularly; this is an added reminder. Checking Engine Oil 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 located near the front of the engine compartment. See "Engine Compartment Overview" in the Index for more information on location. 6-14