I have a 5lb bottle that I been getting filled with CO2. I use it for my intercooler sprayer. I think that the local shop that has been filling it for me has been cheating me out. Reason why I say this. When I first got the kit a friend had it and then sold it to me. He told me that there was a little left he said probably a 1/4 of the bottle. That lastest me a long time. Now I am going to this local shop and a full bottle doesn't last me no time. When I knew there was liquid coming out a white fog would come out of the cooling ring, now nothing comes out of the ring you can hear it but you can't see it. I think they are just putting straight gas in the bottle and no liquid. Should the bottle be filled up with straight liquid? With a 5lb bottle how much should everything weight when it is filled, just a rough guess.