5.4 Natural Gas Engine
Can't find a forum for the Econolines, so I'll try here. I have a 2001 E350 with a 5.4 equipped from the factory for natural gas.
Does anyone know where I can find out more about it? Manuals? typical mileage? I don't know how accurate the gauge is, as it seems to drop 1/2 tank overnight after the first fill.