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Worst mpg the more I drive

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Old Jun 23, 2007 | 09:38 PM
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Default Worse mpg the more I drive

Last week I filled up 3 gallons. About 1/3 of a tank and got ~40 mpg. This week I filled up like 3/8s of a tank and get 32.x mpg.
Why is it the longer I wait to fill up, the worst gas mileage I get?

Last edited by M@rshy; Jun 23, 2007 at 10:46 PM.
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Old Jun 23, 2007 | 09:41 PM
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because the way you're doing it isn't an accurate account for overall mpg
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Old Jun 23, 2007 | 10:32 PM
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Originally Posted by Samson
because the way you're doing it isn't an accurate account for overall mpg
Yup


Just fill the whole tank up, I don't know why people only put a 10 bucks in here and there.
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Old Jun 23, 2007 | 10:41 PM
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worse
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Old Jun 23, 2007 | 10:46 PM
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No, I always keep it on full. I wait until I hit about 1/2 tank before I fill up. But if I wait until 3/4 tank to top it off, I get better mileage.
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Old Jun 23, 2007 | 11:15 PM
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Originally Posted by MarshyTheKid
No, I always keep it on full. I wait until I hit about 1/2 tank before I fill up. But if I wait until 3/4 tank to top it off, I get better mileage.
You mean 1/4 tank?
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Old Jun 23, 2007 | 11:45 PM
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because fuel gauges aren't accurate.
I always wait till way after my fuel light comes on. I know how many miles I can get to a full tank, and I use as many as I can get away with.
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Old Jun 23, 2007 | 11:48 PM
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Originally Posted by Black2KGSR
because fuel gauges aren't accurate.
I always wait till way after my fuel light comes on. I know how many miles I can get to a full tank, and I use as many as I can get away with.
Ya, but that doesn't really apply to him becuase he fills the tank up and reads the receipt, lol.
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Old Jun 23, 2007 | 11:48 PM
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Originally Posted by 94civicEX
You mean 1/4 tank?
No. I wait until I'm down 1/4 tank to 1/2 tank.
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Old Jun 24, 2007 | 05:48 AM
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So why fill up when you only need 3-6 gallons???
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