Looks like he is adding a tiny travel trailer, a Runaway Campers Rouser, to his setup now.

https://youtu.be/xX2PqbwgOi8

I know that Chinese diesel heaters are supposed to be the way forward. But I am typically out in 14d increments and the OEM diesel tanks seem to hold 2-3 days of fuel. If I ever do install a CDH I’ll likely mount a diesel tank under the van and fill it from outside.

We have a Eberspächer fuel heater that uses gasoline rather than diesel fuel, and it is tied directly into our van’s fuel tank. It seems rather efficient - over the course of a week below freezing we only noticed the gas gauge going down a little.