Well, I was able to finish a race with just 0.4l left. Though there might already have been changes to the final behaviour, as I complained about my driver \'saying\' he would pit in the penultimate lap which was then reverted when the raceleader started his final lap... and he then ran out of fuel.See here for the explanation from Andrew.
http://igpmanager.com/play/?url=forum-thread/136#1148
So in the worst case I was responsible for your loss AND inhibited the win, Leon. Sorry! ;-)