so now, the power...it's powered by the proven for years triton V-10... with the tow/haul 6 speed trans...Ford has come a long way with this power train,.. un like the early years, the new motor is very quiet, the 6 speed gets you to travel speed quick and quiet... runs like a mouse in slippers...they also improved on the air intake and cooling fan..the ac blows ice cold, and a cool feature is the compressor cut of switch that allows you to cut the compressor when on steep grades and still recirculate the in side cool air... the fuel tank is 55 gals.. enough for a full day of travel, easy 400 miles..not towing, driving freeway speed, you can net 9mpg......but if you slow down to 55mph,.. there are claims of over 10mpg..