Whats your City MPG - UPDATE 10/18/06 - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-05-2006, 06:07 PM   #51
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Yeah...that'* what I was thinking WHILE I was cutting the airbox apart. We'll see when I add the *&B filter if it contimues to go up.
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Old 10-05-2006, 06:47 PM   #52
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Hmm...just an update...

my most recent tank was an avg of 26.74 MPG!!

Top that
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Old 10-05-2006, 11:33 PM   #53
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Anywhere from 16 to 19 in the city, usually around 18, though I mean city, by all stop lights and jutting around Boston for the most part. On the highway I get 23 if I go 75mph and 30 if I cruise at 55mph so a bit of a drop off there. It'* kind of weird though, anytime I every do any kind of tune up work, the improved pickup seems to go away after 100 miles or so. Did the fuel filter, PCV, all that fun stuff and it went back to normal within a week or two. I do not drive much though as I take the T to school.

Side question: How can I tell what rear end ratio I have since I noticed you guys were throwing around all sorts of numbers for that before?
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Old 10-06-2006, 01:12 AM   #54
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for almost all city I can see 19-21 and highway I get 28-32 depending on where I drive remember I am at 6000 feet + and most of the interstate is going from 6000 feet above sea level to 10,000+ then back down to 7200 feet so the mileage is not so good up here and the air is thinner and less dense which means lower quality combustion.
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Old 10-06-2006, 02:20 AM   #55
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Quote:
Originally Posted by heapacreep
Side question: How can I tell what rear end ratio I have since I noticed you guys were throwing around all sorts of numbers for that before?
Well since we don't have RWD cars, we just refer to it as the "gear ratio"

And the way you can tell is by looking at the RPO tag.

Now my LE has the "granny ratio" or rather the best one on gas...of 2.87. So I am gonna take a whack at it an assume since yours is only one year newer than mine...I would say either..hmm

There are three I'm pretty sure.

2.87 F17
2.97 (forgot RPO, but use the process of elimination :P )
3.33 GX3 usually only the SSE gets it.

But with the gas mileage you are seeing, I am gonna guess 2.97, but check your RPO Tag
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Old 10-18-2006, 11:30 AM   #56
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OK...filled up with 18.000 gallons and had 357.5 miles on the tank for total of 19.86MPG. Down from last week. I think it'* time to order the 7" cone.

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Old 10-18-2006, 11:35 AM   #57
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Might be the winter blend..or you caught a lot of lights.

My city mileage blows...(like my supercharger)
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Old 10-18-2006, 01:42 PM   #58
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Quote:
Originally Posted by BillBoost37
Might be the winter blend..or you caught a lot of lights.

My city mileage blows...(like my supercharger)
True Dat. I drive her hard, all city, and get 16-17mpg on a good week.
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Old 10-18-2006, 04:42 PM   #59
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Quote:
Originally Posted by captainmiller
True Dat. I drive her hard, all city, and get 16-17mpg on a good week.
Uh... 19-20 is my low end mileage...

Cept for that one..near 15mpg... that was really fun.
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Old 10-18-2006, 08:35 PM   #60
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Last Tank was almost all highway, got 27mpg.

RPO number says I've got a 3.05 final drive ratio, so that seems to be on par.
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