Over the years we've accumulated I think 4 - 30 pound tanks. When 1 of the 2 on the RV gets empty, I just swap out in between trips. There's usually always at least 1 full spare in the shop. Then when I'm' going to town, or get bored, I may go fill the spares. We usually carry one of the spares in the winter, or on really long trips, just to keep from having to fill while on the road.
I guess my point is, get you a couple of spare tanks. They're cheap. Get them filled, and keep them around the house. Then you always know you're going on a trip with 2 full tanks.
John and Rebecca Dickson
Emma-7 / Little John-5 / Iva-1
Full Timing Again, Rev B
2013 Ford F-350 Lariat CC LB PSD
2015 SOB TT - With OC's Awning Poles (#8)
At least in Heaven, RVs will be perfect, and I won't have to keep fixing them.