GMC Hummer EV Tesla Cybertruck vs. GMC Hummer EV 2021 Genesis GV80 2021 Ford Bronco 2020 electric vehicles Best car lease deals Best car insurance

Watch how an engine warms up, thanks to a thermal camera

File this one under "things you didn't think were interesting, but totally are."

Engineering Explained is a great YouTube channel that loves digging into the automotive side of science. This time, he's turning his attention to the engine, and he's brought a thermal camera along for the ride.

OK, maybe there isn't actually a ride involved. Instead, EE digs into the science of a warming engine. His thermal camera points under the hood of his Subaru Crosstrek, and we get to see just which parts of the engine warm up first after a start in brisk 22-degree F weather.

The video doesn't solve the age-old question of whether or not you need to warm your engine all the way up before driving in winter (I'm in the "no" camp, for a variety of reasons), but it does show that the oil filter and alternator heat up well ahead of, say, a battery.

Science!