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Increase 2004 Suburban Gas Mileage


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dgelfuso's Avatar
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Join Date: Mar 2011
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March 8th, 2011, 3:21 PM   #1  
Increase 2004 Suburban Gas Mileage

I have had it since it was new and it has 105,000 miles. I used to get 20-22 on highway and 15-16 around town.

Over the last year, I have noticed more like 18-19 on highway and 13-14 around town.

Are my mileages normal?

What can I do to increase gas mileage?

 
73shark's Avatar
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Posts: 9,121
KC, MO area

March 8th, 2011, 3:46 PM   #2  
Quit using gas w/ ethanol in it if possible. E85 will cut your mpg by 25%-30%. Don't know how much E10 cuts it but probably 0.5-1.0 mpg.

 
dgelfuso's Avatar
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March 8th, 2011, 3:53 PM   #3  
Posted By: 73shark Quit using gas w/ ethanol in it if possible. E85 will cut your mpg by 25%-30%. Don't know how much E10 cuts it but probably 0.5-1.0 mpg.
I guess I should have mentioned I don't have the E85 option.

 
73shark's Avatar
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March 8th, 2011, 4:33 PM   #4  
But you do have the E10 option. I just threw in E85 because it really hurts mpg.

 
in2pro's Avatar
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Austin, Texas

March 9th, 2011, 9:16 AM   #5  
Seems like so many stations use the E10 blend for winter... I noticed that on pumps near me that the regular has the "May contain 10%" but the mid and premium do not state that....sales gimmick for the semi informed?

 
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