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Originally Posted by MNBoxster
Hi,
Yes, but the Tanks are Vented and so pull in Ambient Temperature Air to offset the Gas which is pumped out. How much difference this makes probably depends on the Air Temp, how full the Tank is, etc...
Happy Motoring!... Jim'99
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Of course... then that newly introduced air is quickly warmed/cooled by the far greater mass of gas/metal/air that is already at the underground temp.
The point is that it's not a huge temperature swing, but rather just a few degrees, and it moves very slowly over weeks/months, not over a few hours.
I'm sure there is a minor difference in the quantity I get when I purchase gas in January as opposed to July, but not when the air temp falls 20 degrees for just 4 or 5 hours or even a few days, and the underground temp hasn't changed.
But hey, if it makes you feel good, then do it!
