had my 98 cu ft tank filled . lasts forever at room temperatures. take it out side 35 degrees for an hour , drops to 210 bar after one fill. will not show higher even with valve wide open. just shows you influence of temperature on pressurized air. i know there is plenty of air , i just had it filled. when it gets cold , it will fill my gun to 205 bar max , that's it. i just thought that was interesting.