ORIGINAL: playntraffic
look into a three line fuel tank and fuel dot
Ditto
If you don't have a 3-line tank already and you don't want to take it all apart, DuBro has a new refueler that I have used several times that works well. I don't like most fuel valves but I have had very good luck with this one:
http://www3.towerhobbies.com/cgi-bin...?&I=LXWDG9&P=7