The idea seems to be to not burn the 'oil', instead to just use it as a 'carrier' for the hydrogen, which then is released from the oil when needed.

While the 'used' oil is being stored, to be 'reloaded' with hydrogen by whichever means.

So the 'carrier-oil-component' is the reusable thing here.

All while being able to be handled, stored, transported similar to diesel.

Supposedly.

shrug

I don't know what this LOHC stuff really is, but it's easy to imagine that dissolving H2 in in an existing liquid would be much less of an undertaking than inducing it to become C8H18 or whatever.