Propane hoses leak

Yes, that is common on some type hoses. Do NOT get the type that have just a regular crimp ring that looks like a regular ring for a finger. THOSE will leak. You want the type that has a cone about 1/2 inch long that engulfs the end of the hose. Doug

the last replacement I bought was bad out of the box. :R

Most common place for a leak. Also the more they are handled, the sooner they will leak.

In the AZ heat and sun they don't last long either.
I had a friend that took his two year old trailer camping with our group and when he set up, both pigtails were leaking, but one was just barely showing a bubble from a soap test. He had a manual regulator change over regulator with a Tee on the bottom for both hoses. The problem was that he couldn't shut off one side. We couldn't get parts late at night, so I ended up taking off one of my soft drawn copper pigtails and letting him use it to replace the one that he had that was leaking real bad. Since I had an automatic change over regulator I could run off of just one side. If for no other reason, the auto change over regulator is worth it.

I use the soft drawn copper pigtails. They could eventually work harden and crack, but I have never had one go bad yet. Besides, they are on the outside and they last much longer than any hose that I've ever had.

I was losing propane and had a time trying to find a leak. turn out the hose was leaking at the fitting and when I moved the hose I heard the hiss. so when traveling the hose would move a little up and down and the tank would be almost empty at camp. so now even with new hoses I travel with the propane off.