Mark, Mark, MARK!
I lead you to the vegetable oil and you repudiate the most natural of things. Some of us realize that petro-diesel is really WVO that has pooled underground and got really, really, really gooppy. You should see it before they refine it. Once you spill biodiesel on your hands and clean them with hand soap and warm water you too will be converted.
You may, as I do, find it hard to believe that storing WVO on your property requires more permitting than does ptero-diesel.
Moment of educational opportunity:
Those are oil lines to the oil to water heat exchanger.
Does it have an automatic transmission? (Laughing at simple questions is rude.)
Casey