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09-29-2006, 04:01 AM
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Hummer Veteran
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Join Date: Mar 2006
Location: North Florida
Posts: 117
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Re: How low can you go....
I think we are seeing the folks with the 5-speed tranny getting the good mileage here.
I get very close to 18 mpg pulling a flatbed trailer with two ATV's. I also have a rooftop hardshell cargo box for added resistance. I keep it at 70 mph or less. I run premium gas and Mobil 1 oil.
Come on 5-speeds lets toot our own horns! (not to mention the crawl ratio) oops did I say that out loud?
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Shadow Green 5-Speed/GREEN GRILLE/rear door AIR compressor/Factory Nav/Lux-Off Road Pkg/Sunroof/Roof & Grille Off Road Lights/Underbody Protection/Wet Okole seat covers/Husky floor liners/Black fuel door/No Chrome/'04 Grand Cherokee Overland/'94 Isuzu Rodeo 4x4 lifted.
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09-29-2006, 01:21 PM
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Hummer Authority
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Join Date: May 2006
Location: Upstate NY
Posts: 1,050
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Re: How low can you go....
Quote:
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Originally Posted by Hal
I think we are seeing the folks with the 5-speed tranny getting the good mileage here.
I get very close to 18 mpg pulling a flatbed trailer with two ATV's. I also have a rooftop hardshell cargo box for added resistance. I keep it at 70 mph or less. I run premium gas and Mobil 1 oil.
Come on 5-speeds lets toot our own horns! (not to mention the crawl ratio) oops did I say that out loud?
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Yup. 5-speed manual. I am fairly casual driver. No strong starts. I run 87-octane gas. Under 75 on the highway. Commute to work (25 minutes) is mostly highway. Not very much stop and start. After about 8 fill ups (about 3600 miles on her), I average just above 19mpg. Can't complain.
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2009 Gray H3T, Aventure Pkg, 4 speed Auto, Brush Guard, Trailer Pkg., Elec Driver's Seat, 6CD audio, Slant back cap.
Gone: 2006 Red H3, Aventure Pkg, 5 Speed, Monsoon, Brush Guard, Rubber Foor mats, Trailer package, Chrome Fuel door, Engine Block Heater.
"You?re making the choices about whether you want to drive a little extra more or not drive extra more."
29-Jul-2008
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10-04-2006, 05:54 PM
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Hummer Guru
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Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
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Re: How low can you go....
Avg 17 to 18 MPG once 19 with Auto Trans and cold air mod... 
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"For God so loved the world he gave his only son that whoever believe in him would not perish but have everlasting life. "
(John 3:16)
2006 H3 Slate Blue,Header,Jacked,CAI,Toyo35's,HHO.
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10-04-2006, 07:32 PM
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Hummer Veteran
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Join Date: Jan 2006
Posts: 91
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Re: How low can you go....
From Florida to Arizona I got as much as 21 mpg using air occasionally doing 65 to 70 mph.
I have an automatic tranny.
Last edited by Bill1065 : 10-05-2006 at 02:15 PM.
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10-05-2006, 02:10 PM
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Hummer Veteran
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Join Date: Jan 2006
Posts: 91
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Re: How low can you go....
Going to and from work and riding around in town I just calculated 19 mpg this morning. I guess they knew what they were doing putting the I-5 into a 4 ton vehicle; acceleration off the line is very strong IMHO, even though I don't do a lot of jackrabbit starts. I use Mobil synthetic also.
I have had absolutely no problems whatsoever at 14,000 miles. Only thing that bugs me is the rear seats don't lay down flat, no rear AC vents for passengers and I need a rear view cam. I backed into and ran over a mailbox yesterday; not a scratch though.
Last edited by Bill1065 : 10-05-2006 at 02:14 PM.
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10-05-2006, 04:15 PM
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Hummer Expert
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Join Date: May 2005
Location: Southern California
Posts: 829
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Re: How low can you go....
On a recent trip I got 17mpg w/o trying.
The A/C was one on, 70-75mph, no cruise control on. The truck was loaded not me.
After a long stretch (150 miles+) of dirt roads and a high pass we filled up and I still had 14 gallons in the tank!
I got real similar mileage to my friend's V6 Toyota 4-Runner and I kept telling him my truck weighs more, bigger tires and FT 4x4.
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Desert Dan
H3 2006 Adventure/Lux/5-speed/sunroof/rock rails/underbody skids/block heater/Boulder Grey/ Defender Roof Rack
Jeep TJ Rubicon 2003
1988 Jeep Cherokee
Gone - But- Not Forgotten 4x4's
1994 Jeep YJ
Toyota 4x4 Truck(s)
1970 Jeep CJ-5
1962 Willys Wagon
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