1995 Buick Regal Owner's Manual - Page 76

Driving Through DeepStanding Water NOTICE: If you drive too quickly through deep puddles or standing water, water can come in through your engine's air intake and badly damage your engine. Never drive through water that slightly is lower than the underbody your vehicle. If you of can't avoid deep puddles or standing water, drive through them veryslowly. To use the coolant heater: I. Turn off the engine. 2. Open the hood and unwrap the electrical cord. 3. Plug it into a normal, grounded 110-volt outlet. Engine CoolantHeater (Option) In very cold weather, 0°F (- 18 C) or colder, the engine coolant heater can help. You'll get easier starting and better fuel economy during engine warm-up. Usually, the coolant heater should be plugged in a minimum of four hours prior to starting your vehicle. O 2-14