I know the title sounds like the beginning of a joke but it's true.
I had 4 kegs hooked up and I hooked a 5th keg up and a week or two later I looked in the bottom of my keezer to find the 5th keg had completely emptied into the bottom.
There was obviously a leak someplace bit just curious where and how to find it.
My co2 tank ran out but I assume it was because I had a leak in the beer line and it just emptied the whole keg and the rest of the co2 tank.
I don't even know where to begin to trouble shoot the possible leak. Is it in the keg, in the beer line, at the nipple shank... How do I know?