1995 Buick Roadmaster Owner's Manual - Page 76

To use the coolant heater: 1. Turn off the engine. 2. Open the hood and unwrap the electrical cord. NOTICE: After you've used the coolant heater, be sure to store the cord as it was before to keep it away If from moving engine parts. you don't, it could be damaged. How long should you keep the coolant heater plugged in? The answer dependson the weather, the kind of oil you have, and some other things. Insteadtrying to list of everything here, we ask that you contact your Buick dealer inthe area where you'll be parking your vehicle. The dealer can give the best advicefor that you particular area. 3. Plug it into a normal, grounded 110-volt outlet. 2-1s