Getting the propane tank refilled is probably the #1 annoyance of my fulltiming life. It doesn't have to occur very often, but it's almost always somewhere I've never been before. And if I'm traveling, I have the toad behind my 40-foot motorhome, further complicating matters.
Some RV parks
can refill onboard tanks, but their price per gallon is often pretty high. A couple of weeks ago, the RV park in New Hampshire wanted $5/gallon.
I've found that U-Haul places aren't all that easily maneuverable in a big rig, especially with a toad. Some RV dealers have propane; I got a good price, with easy access, at Baydo RV in Chehalis, Washington, a couple of years ago. And for the record, I noticed a surprising number of gas stations that had non-automotive propane in the Pacific Northwest, and they often had the price posted out front.
Flying J has always been my back-up plan, but it's annoying because a lot of the time the propane is with the RV pumps in front (not in the "truck" part of the lot) AND you have to go through the RV pumps backwards.
For future reference (since there aren't any locations in Oregon), here's a website that lists Tractor Supply locations that have propane (not all do):
http://www.tractorsupply.com/content_landing-page_propane#get-your-tank-filled
I know that some can fill onboard tanks, but not necessarily all. And access by a big rig might be difficult in some locations. But it's a start.
There's also this website:
http://www.altfuelprices.com
I've updated it whenever I've found propane, including a comment if they will fill onboard propane tanks, but I think I'm the only RVer who has ever done that. I wish it would catch on.
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