1995 Buick Riviera Owner's Manual - Page 75

Engine Coolant Heater (Option) In very cold weather, 0 O (- 18O C) or colder, theengine F 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. I NOTICE: After you've used the coolant heater, be sure to store the cordas it was before to keepit away from moving engine parts. If you don't, it could be damaged. How long should you keep the coolant heater plugged in? The answer depends on the weather, the kind oil of you have, andsome other things. Instead of trying to list everything here, we ask that you contact your Buick dealer in the area where you'll parking your vehicle. be The dealer can give you the bestadvice for that particular area. To use the coolant heater: 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. 3. Plug it into a normal, grounded 1 10-volt outlet. 2-18