1998 Buick Park Avenue Owner's Manual - Page 286

Your vehicle may have 2 3800 Sqercharged engine. Supercharging, rather than turbocharging, emphasizes smooth, refined power. The supercharger is a device which is designed to pump more ais into the engine than it would normally use. This air mixed with fuel creates increased engine power. Since the supercharger is a pump and is driven from an engine accessory drive belt, iwreased pressure is available at all driving conditions. c ENGINE O L LOW I CHECK LEVEL HMBHBMrn 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 tfarsttIe cruising, the excess air that the supercharger is pumping is routed through a bypass. A 1 s these controk working together provide high B f performance character and fuel efficiency in the 3800 V6 Supercharged engine. The power steering pump and reservoir are mounted on the rear (driver's side) s the engine biock. See f "Maintenance Schedule" in the Index for when you should check the fluid. Ef you have the Driver Infcmation Center, an ENGINE OIL LOW-CHECK LEVEL message will appear when r the engine oil is approximately I quart (fL) Isw. 7 1 the 1 message is displayed, check the dipstick level and add oil as needed.