Geesh im sorry for not being much of a question answerer but youve got to have the worse deal there, those ford V10s really burn fuel, other than the driving habits that were suggested above, id have to say run the tires with the maximum air pressure, use something like a k&n air filter, free up the exhaust, use synthetic oil, and use the cruise control whenever possible, also find a place to start stealing your fuel from | 
