1997 Buick Regal Owner's Manual - Page 287

Before closing the hood, sure all the filler caps be are on properly. Then justpull the hood down and close it firmly. Engine I -- 3800 Supercharged (Code 1) Engine (If Equipped) Your Buick may have a3800 Supercharged engine. The supercharger is a device which is designed to pump more air into the engine than it normally would use. This air is mixed with fuel, which creates increased engine power. Since the supercharger is a pump and is driven from an engine accessory drive belt, increased pressure is available at all driving conditions. The powertrain control module(PCM), works with a vacuum control to regulate the increased pressure required during specific driving conditions. When this increased pressure or boost is not desired, such as during idling and light throttle cruising, the excessthat the air supercharger is pumping is routed through bypass. a All of these controls working together provide high performance character and fuel efficiencythe in 3800 Supercharged L67 engine. 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 Index. the You should check your engine oil level regularly; this is an added reminder. you It's a good idea to check your engine oil every time get fuel.In order to get an accurate reading,the oil must be warm and the vehicle must be on level ground. 6-11