GM Authority is taking a closer look at how an engine block heater works, while outlining how it can improve cold-weather ...

Humans use hot cocoa, coffee, tea, whiskey, and chicken noodle soup to warm up their insides and defrost from the cold abyss known as winter. Cars use engine block heaters. For the most part, modern ...

When winter temperatures plunge, many diesel truck owners make starting their vehicles easier with a block heater. But when, exactly, should you use it?

Yes, it does reduce gas mileage but only a small amount. It's like the cold weather just won't leave us alone this March-- and most of us are still cranking up the heat as soon as we get in the car.

We may receive a commission on purchases made from links. For much of the U.S., the concept of an engine block heater is a foreign one. Even areas like the mile-high city (Denver), which faces its ...