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Old 03-18-2008, 05:52 PM   #1 (permalink)
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Gasoline loss through evaporation?

I currently have an open vent hose running directly from my gas tank to the air cleaner. My concern is that when the car is just sitting, I could be losing gasoline through evaporation. I've been plugging up the end of the hose when I have the car sitting (I'll soon be getting a valve for a more permanent solution). But does anybody think I could lose a significant amount of gas while it is open (some days I forget to plug the hose)? I know that gasoline is volatile, evaporating at low temperatures...but I don't know if the losses would be enough to actually be noticable or if it would be significant.

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