Propane Issue - need help!

f150camper wrote:
Hi guys!
I am having a repeated issue with our propane tank / regulator.
First camping trip this year, we went to the coast. That was a few weeks ago. It was cold, we had electric hookup, and we used propane to heat extensively. After three days (on the morning of leaving), the heater suddenly does not work anymore, and the water heaters pilot light shuts off. So I am thinking the tank is empty. Going to the gas station to have it re-filled, I am told it was still about 2/3 full. Hmmmm .... Tried everything at home, everything works like a charm.
So this weekend, we go on a trip again. This time, dry camping, no hookups. After setting up camp (incl. lighting the water heater), wife reports that the fridge light blinks. Sure enough, the water heaters pilot is out, too. SO I look at the gas bottle. And I swear I hear a hissing sound coming from somewhere near the regulator. So I wiggle the hose from the gas tank to the regulator, and at least in my imagination, I can hear the hissing sound change. No smell of gas that I recall, though. So I take a wet rag and get the whole hose wet, incl. the connection to the regulator to see if I can spot any bubbles. Nothing. In the meantime, wife reports that the fridge is working again. I re-light the water heater - everything is fine.
From then on, everything worked for three nights, no problem. Tried to test the hose and connection again - with no sign of any leaks.

So ... question for you guys: what is going on? What else can I do? What would you do?
I want to avoid going somewhere with no problem to diagnose, spending a lot of money on nothing. But then also, this is the propane supply.

Any help is very much appreciated!

You say you used a wet rag. The best way to check for gas leaks is with soapy water. I don't know if you did this but it's the way to go. For natural gas leaks too.

I agree with the majority as far as changing your regulator/fittings. Relatively cheap and easy and worth it even if it's just for peace of mind.