A thermostat is an essential component of an automotive engine cooling system. While most cars have one, some have two thermostats. Here's why.

Engineers design modern engines to run in a narrow temperature window where power, efficiency, and emissions all line up. The thermostat sits at the center of that control, opening and closing a ...

Add Yahoo as a preferred source to see more of our stories on Google. In liquid-cooled cars, a thermostat is a valve that regulates the flow of coolant to keep things running safely within your engine ...