My tank is set to come on around 10 psi, with the 41 (i think) jet (its a hotair.. i think the intake is too restrictive to use anything bigger..)
anyway... lasts around 3 weeks or so with me driving :-D
under 3 dollars to get it filled. i also had the pleasure of explaining how the propane works to the u haul guy when i backed up to the propane cage and hit the remote trunk release.. all he saw was the tank and the gauges.. his jaw hit the floor. it was great! every time i go up there its the same thing all over again..