1997 Buick Skylark Owner's Manual - Page 79
1997 Buick Skylark Manual
Page 79 highlights
Engine Coolant Heater(If Equipped) 2 4 Engine .L 3100 Engine In very cold weather, (- 18 C) or colder, the engine 0°F coolant heater can help. You'll easier starting and get better fuel economy during engine warm-up. Usually, the coolant heater should be plugged minimum of a in four hours prior to starting your vehicle. O
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