Where to buy LP gas?

Geeze wrote:
none of the propane dealers around here are willing to fill a built in tank.

why??

Propane is one of those commodities that's found where you find it, and other than actual propane dealers, even google doesn't know who sells it.

Some gas stations, Flying J, rural hardware stores... it's often challenging to find. I'm in a little better position with removable tanks, but that's not your case.