1997 Buick Riviera Owner's Manual - Page 83

1997 Buick Riviera Manual

Page 83 highlights

Engine Coolant Heater (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, in a the coolant heater should be plugged minimum of four hours prior to starting vehicle. your O I 2-22

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