Filter came with a plastic tube inside roll ? NO instructions to remove it or not ? So tested both ways and it works both ways ? One difference thou....when I opened chamber after running it with plastic tube, their was oil and water on the walls of chamber and running it without plastic tube none . Great filter ...but I asked other buyers and thanks for replying...everyone is using it with plastic tube, I think air flow should be going thur filter not around it. So my two cents, I'm using it without plastic tube. Manufacturer should include a manual how to install and best maintain. Again great filter, absolutely no moisture going in my plasma cutter. Thank you
Rating: [4 of 5 Stars!]