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gas mileage gone

   
Old Jun 17, 2010 | 09:27 AM
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upnorthhhr
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Joined: 02-17-2008
Posts: 58
From: minneapolis
gas mileage gone
Dealer replaced the head under warranty, and now the gas mileage has totally taken a hit. Dropped from 34 hwy to about 28.

Any thoughts?
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Old Jun 17, 2010 | 10:14 AM
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pitbull76
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Joined: 11-20-2006
Posts: 931
From: Peoria, IL
Just to make sure you're comparing apples to apples, have you been running A/C lately where you weren't before? Are you cruising at the same speed?
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Old Jun 17, 2010 | 02:26 PM
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prod
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Joined: 12-14-2007
Posts: 2,964
From: Toronto ON Canada
Are you measuring at the gas pump, or just looking at the displayed average on the dash? It can be deceptive if it has been reset recently.
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Old Jun 17, 2010 | 07:11 PM
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1970judge
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Joined: 07-12-2007
Posts: 690
From: Republic of Texas
Best way to calculate AVG mpg is by miles driven/gallon tank.
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