Join Date: Jan 2008
How fast did your 10 pound cylinder run out of gas? Depending on how long you have had it, you may have more leaks/a more serious leak than initially anticipated.
A fluctuation of about 3 PSI (0.2 bar) is quite small, and I would not worry too much over it.
If your low pressure gauge was blown, it would not register any changes in pressure at all.