Based on his recent inflammatory statements he continues to try to retreat from as his past shows how much he is really not telling the truth?
To keep them warm. The human body goes into shock.
Just make sure that it's securely stowed, and that it's easily accessible. If you can't get to it in an emergency, there's no point in carrying it.
Take the cover off and drain all the old grease and clean the inside out as best as you can, brakleen works good. Go to dodge and get a couple of bottles of the limited slip friction modifies additive. Put the cover back using a gasket or rtv sealer and then put the bottles of additive in and then fill it up the rest of the way with whatever grease dodge recommends.
If properly secured it is not dangerous and if yours or someone elses vehicle caught on fire you would be Happy to have it, Every big Rig is required to carry one.