i'm not sure if this is the right place to ask but i'm trying to think of ways to keep condensation out of a metal compressed air tank. it says i should destroy it in 2016 for this reason. would a packet of desicant(sp?) inside the tank take care of this or would a more expensive in line air dryer do the trick? btw, it's a 5 gallon vehicle mounted tank compressed by a 12v compressor so it will be used by me quite a lot once i finish the system. so back to the question. waterproofing the inside of a compressed air tank.