Clemson82
Full Access Members
Here's another, road & track saying basically the same thing. This one has an engineer explaining why in detail.
https://www.roadandtrack.com/car-culture/videos/a30249/why-you-shouldnt-warm-up-your-car/
If letting your car idle for 15 minutes was harmful, they wouldn't sell remote start as a feature.
The articles also don't address the items others have mentioned, warming the plastic components in the engine bay, etc. In this day and age, it's difficult to know the agenda behind some of what is published. Is it for the benefit of the consumer, or just for reduced emissions? One source is a government agency that mentions protecting the environment in their mission statement. Both may be important, but that's a whole different discussion.
In the second article "And as Jason explains, idling an engine doesn't really build up much heat at all, compared to driving it.". Maybe Jason drives a hybrid... Let him warm up a V8 for 15 minutes and then stick his hand on the block.