1998 Buick Riviera Owner's Manual - Page 89

Engine Coolant Heater (Option) I ' ugging the cord into an ungrounded outlet could causean electrical shock. Also, the wrong and cause kind of extension cord could overheat a fire. You could beseriously injured. Plug the cord into a properly grounded three-prong 110-volt AC outlet. If the cordwon't reach, use a heavy-duty three-prongextension cord rated for at least 15 amps. In very cold weather, O F (- 18 C) or colder, the engine 0 coolant heater can help. You'll easier starting and get better fuel economy during engine warm-up. Usually, the coolant heater should plugged in a minimum be of four hours priorto starting your vehicle. O 4, Before starting the engine, be sure to unplug and store the cord aswas before to keep away it it from moving engine parts. you don't,it could If be damaged. To Use the Engine Coolant Heater 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. 3. Plug it into a normal, grounded 110-volt outlet. AC How long should you keep the coolant heater plugged in? The answer depends on the outside temperature, the kind of oil you have, and some other things. Instead of trying tolist everything here, we ask that you contact your dealerin the area where you'll parking your be vehicle. The dealer can give you the best advice for that particular area. -2-22