The D2 fuel system is a mystery to pretty much everyone. I tried buying eight 8s in case it had something to do with sourcery, but I'm still none the wiser
Big Red alternates between running to 0 miles happily but only taking 3/4 of a tank to fill up, or taking a full tank but then running out with 55 miles remaining. There's no logic to which she will choose on any given day, except if I keep a gallon can in the spare wheel well, in which case she'll run to 0. I'm sure if I take it out, she'll run out at 55 miles again.