old said: (quoted from post at 10:56:46 05/04/10) On Sunday I picked up of all things an O2 tank I do not smoke any more so I figure I'll never need it but it came with a bunch of junk and I payed all of $1 for the stuff. Tank has 1000psi of O2 in it to boot.
If it's for breathing air the level of 02 will drop off over time. I'm a member of the fire dept. in my area and I believe it's every 4 months the tanks for our breathing apparatus need to be purged and refilled.
Was talking to a full time firefighter last week and he went to assist with a call to a garage fire to a neighboring dept. and about 10 steps after he went on air he started to get extremely weak and tired.......turned out the air was over 4 years old in those bottles and as such the oxygen content was significantly lower than it should have been.........seemed strange to me but apparently it can happen.
Back to the OT, I notice a big difference in the smell of gas depending on which station I get it from. I think it has to do with the amount of alcohol in a lot of gasoline nowadays.
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