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08-10-2011, 04:07 PM
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Hummer Professional
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Join Date: May 2006
Location: las vegas
Posts: 301
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Re: Increase mpg easy
any updates?
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scott j.
2008 h2 sut
2008 escalade
1969 charger
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08-10-2011, 06:32 PM
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Hummer Authority
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Join Date: Jan 2008
Location: Gaithersburg, MD
Posts: 1,763
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Re: Increase mpg easy
Quote:
Originally Posted by lasvegash2
any updates?
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Since the install...
1st tank: 11.1
2nd tank: 11.3
3rd tank: (working on that now)
The 2nd tank surprised me because I spent 150 miles towing my 5x8 with ATV through the mountains of western Maryland. I was using the Towing feature; the truck had noticeably different shift points and it was obvious that the extra weight was there. I expected this tank to yield much lower MPG due to the hauling, but it came out .2 higher.
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CNTRY
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08-11-2011, 01:18 PM
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Hummer Veteran
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Join Date: Aug 2009
Location: NE US
Posts: 124
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Re: Increase mpg easy
I used to run a fuel catalyst in my 2 stroke 500cc atv all the time and found them to keep my fuel always fresher and never had any fuel problems while running it. They look like metal "mentos" that you drop in your tank.
I would not be surprised if there was some science here at work with this moon dust.
Making fuel is a science in itself. Here is a link to the catalyst:
http://www.fitchcatalyst.com/recreational_vehicles.php
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08 SUV birch white LUX
07 SUT birch white LUX
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08-11-2011, 04:45 PM
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Hummer Veteran
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Join Date: May 2010
Location: eastern New Mexico
Posts: 131
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Re: Increase mpg easy
One of my friend's dads does something similar and swears by it. He is currently testing it out as well and is going to tell me the results. But he claims more drastic changes in fuel economy than 2mpg, more like 15mpg. If it pans out I'll throw it on here and we can combine all these products for the most fuel efficient vehicle ever.
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2003 Hummer H2
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08-12-2011, 09:17 PM
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Hummer Expert
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Join Date: Sep 2007
Location: Mason, OH
Posts: 779
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Re: Increase mpg easy
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08-16-2011, 05:34 AM
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Hummer Expert
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Join Date: Jul 2006
Posts: 691
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Re: Increase mpg easy
Quote:
Originally Posted by mightyepp
One of my friend's dads does something similar and swears by it. He is currently testing it out as well and is going to tell me the results. But he claims more drastic changes in fuel economy than 2mpg, more like 15mpg. If it pans out I'll throw it on here and we can combine all these products for the most fuel efficient vehicle ever.
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Even better than that. Put a clothes pin on the fuel line.
Works every time. 
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08-16-2011, 06:49 AM
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Hummer Novice
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Join Date: Jul 2010
Posts: 19
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Re: Increase mpg easy
Keep watching, the truck's mpg calculator is slow. You can manually check for quicker results. What was your emissions retest? Thats why I sent you the SF28 to check emissions.
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08-16-2011, 06:49 AM
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Hummer Novice
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Join Date: Jul 2010
Posts: 19
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Re: Increase mpg easy
My mpg is 13.1 and climbing.
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08-16-2011, 02:51 PM
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Hummer Authority
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Join Date: Jan 2008
Location: Gaithersburg, MD
Posts: 1,763
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Re: Increase mpg easy
Quote:
Originally Posted by starkey188
Keep watching, the truck's mpg calculator is slow. You can manually check for quicker results. What was your emissions retest? Thats why I sent you the SF28 to check emissions.
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I have been checking the last six tanks manually; the three prior to the installation and the three since the installation.
I am currently on my fourth tank since the installation and will be filling up this evening, so I'll have another set of results to post. I'll do another emissions test this Saturday and post the results as well...as that was part of our agreement. But to be honest (and I think I speak for most of this forum) I wouldn't pay money for this if the only positive result was 'lower emissions' especially since I've seen how low the truck blows already. It would have to post some MPG results for me to come out of pocket with the George Washingtons.
I'm also going to leave the unit attached and see if there are any long term MPG results (posting back here and there) and also to see my dealer's reaction when he finds it on top of the tank...that'll be funny.
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08-15-2011, 06:47 PM
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Hummer Authority
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Join Date: Jan 2008
Location: Gaithersburg, MD
Posts: 1,763
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Re: Increase mpg easy
Quote:
Originally Posted by guruerror
Since the install...
1st tank: 11.1
2nd tank: 11.3
3rd tank: (working on that now)
The 2nd tank surprised me because I spent 150 miles towing my 5x8 with ATV through the mountains of western Maryland. I was using the Towing feature; the truck had noticeably different shift points and it was obvious that the extra weight was there. I expected this tank to yield much lower MPG due to the hauling, but it came out .2 higher.
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That 3rd tank averaged 10.7. (SIGH)
"Nothing to see here, folks.
You don't have to go home, but you can't stay here. "
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08-16-2011, 05:16 AM
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Hummer Professional
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Join Date: Jul 2009
Location: Franklin, TN
Posts: 380
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Re: Increase mpg easy
And I had such high hopes... wait... nope.... actually I didnt. 
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06' black H2 SUV. Truxxx Leveled. 17" XD Addicts. 37" SS M16's. Gobi. DEMONguard. Magnaflow. way to many other things to list...
73' Dodge Charger. 400 Magnum. B5 Blue. White Leather.
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