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Feb 12th, 2024
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 Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9054588
05/30/24 02:34 PM
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Joined: Jun 2011
Posts: 36,257
Buzzsaw
THF Celebrity
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THF Celebrity
Joined: Jun 2011
Posts: 36,257 |
Love those HD Bumpers. A must have in deer/hog country. Frisco too. move those yellow stickered Tesla's out of the way. 
SPACE FOR RENT
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9090137
08/12/24 01:14 PM
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Joined: Aug 2005
Posts: 32,998
txtrophy85
OP
THF Celebrity
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OP
THF Celebrity
Joined: Aug 2005
Posts: 32,998 |
Just about to roll 25k on the ODO.
In the last 2500 miles the fuel economy has noticeably improved. Towed my boat to LBJ and back and got 14 mpg.
Went to Arkansas over the weekend and got 16.5 mpg avg overall (what my ford would have gotten), when i slowed down to 70-72 I would get high 18's.
Ive noticed fuel economy drops when I have a strong headwind or I get above 77 mph. at 80 mph its drinking the diesel even though the rpm's haven't changed much.
Everything else is running just fine.
For it is not the quarry that we truly seek, but the adventure.
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9090702
08/13/24 01:41 AM
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Joined: Oct 2004
Posts: 23,113
Superduty
"The Regulator"
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"The Regulator"
Joined: Oct 2004
Posts: 23,113 |
Just about to roll 25k on the ODO.
In the last 2500 miles the fuel economy has noticeably improved. Towed my boat to LBJ and back and got 14 mpg.
Went to Arkansas over the weekend and got 16.5 mpg avg overall (what my ford would have gotten), when i slowed down to 70-72 I would get high 18's.
Ive noticed fuel economy drops when I have a strong headwind or I get above 77 mph. at 80 mph its drinking the diesel even though the rpm's haven't changed much.
Everything else is running just fine.
Ouch. 
'It's Only Treason if You Lose."
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9090746
08/13/24 03:12 AM
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Joined: Jul 2013
Posts: 1,529
Hirogen
Pro Tracker
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Pro Tracker
Joined: Jul 2013
Posts: 1,529 |
Just about to roll 25k on the ODO.
In the last 2500 miles the fuel economy has noticeably improved. Towed my boat to LBJ and back and got 14 mpg.
Went to Arkansas over the weekend and got 16.5 mpg avg overall (what my ford would have gotten), when i slowed down to 70-72 I would get high 18's.
Ive noticed fuel economy drops when I have a strong headwind or I get above 77 mph. at 80 mph its drinking the diesel even though the rpm's haven't changed much.
Everything else is running just fine.
My 2024 2500 HD ZR2 Diesel (almost same truck - just Chevy version) just rolled 15k. Mileage is improving. Our speed limits are lower up here so rare to be over 70mph. At 65 to 70 mph my last highway tank unloaded was 21.4 mpg. Combined unloaded i am getting about 17 mpg. Towing i am getting about 13 mpg towing a 12k open float equipment trailer. Towing an enclosed trailer for the atvs and ski-doos at about 2.5k weight i get the same 13 mpg. I believe the lousy milage on the light trailer is because it is wider and taller then the truck and being enclosed it is like pulling a parachute behind the truck. Was the same effect on my previous truck.
Last edited by Hirogen; 08/13/24 03:14 AM.
Never violate a woman, nor harm a child. Do not lie, cheat or steal. These things are for lesser men. Protect the weak against the evil strong. And never allow thoughts of gain to lead you into the pursuit of evil.
-The Iron Code of Druss the Legend
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9090789
08/13/24 11:12 AM
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Joined: Dec 2013
Posts: 7,688
GasGuzzler
THF Trophy Hunter
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THF Trophy Hunter
Joined: Dec 2013
Posts: 7,688 |
Under 2K RPM and the MPG will go way up ... on anything no matter the age or fuel type. My 2003 6.0L Yukon Denali gets 18 MPG at 63 MPH and 13 at 75 MPH.
Pass the gravy.
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: Superduty]
#9090931
08/13/24 03:02 PM
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Joined: Aug 2005
Posts: 32,998
txtrophy85
OP
THF Celebrity
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OP
THF Celebrity
Joined: Aug 2005
Posts: 32,998 |
Just about to roll 25k on the ODO.
In the last 2500 miles the fuel economy has noticeably improved. Towed my boat to LBJ and back and got 14 mpg.
Went to Arkansas over the weekend and got 16.5 mpg avg overall (what my ford would have gotten), when i slowed down to 70-72 I would get high 18's.
Ive noticed fuel economy drops when I have a strong headwind or I get above 77 mph. at 80 mph its drinking the diesel even though the rpm's haven't changed much.
Everything else is running just fine.
Ouch. Did you keep the bigger tires? The front end replacement and level plus 35's I saw my last two trucks drop about 1-2 mpg
For it is not the quarry that we truly seek, but the adventure.
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9091079
08/13/24 08:05 PM
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Joined: Oct 2004
Posts: 23,113
Superduty
"The Regulator"
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"The Regulator"
Joined: Oct 2004
Posts: 23,113 |
Just about to roll 25k on the ODO.
In the last 2500 miles the fuel economy has noticeably improved. Towed my boat to LBJ and back and got 14 mpg.
Went to Arkansas over the weekend and got 16.5 mpg avg overall (what my ford would have gotten), when i slowed down to 70-72 I would get high 18's.
Ive noticed fuel economy drops when I have a strong headwind or I get above 77 mph. at 80 mph its drinking the diesel even though the rpm's haven't changed much.
Everything else is running just fine.
Ouch. Did you keep the bigger tires? The front end replacement and level plus 35's I saw my last two trucks drop about 1-2 mpg Yes kept the bigger tires, on the lie o meter you are correct it’s showing 31mpg all highway and now 18 mpg highway/city combines. So about minus 1-2 mpg. ![[Linked Image]](https://texashuntingforum.com/forum/pics/userpics/2024/08/full-636-428165-img_4328.jpeg) ![[Linked Image]](https://texashuntingforum.com/forum/pics/userpics/2024/08/full-636-428166-img_4326.jpeg)
'It's Only Treason if You Lose."
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9114215
09/27/24 04:48 PM
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Joined: Aug 2005
Posts: 32,998
txtrophy85
OP
THF Celebrity
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OP
THF Celebrity
Joined: Aug 2005
Posts: 32,998 |
Just rolled 30k miles.
In the last 5k miles or so, fuel mileage has dramatically increased. I'm seeing 16-19mpg on the highway now instead of 13-14mpg.
For it is not the quarry that we truly seek, but the adventure.
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: GasGuzzler]
#9114224
09/27/24 05:27 PM
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Joined: Oct 2004
Posts: 40,230
redchevy
THF Celebrity
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THF Celebrity
Joined: Oct 2004
Posts: 40,230 |
Under 2K RPM and the MPG will go way up ... on anything no matter the age or fuel type. My 2003 6.0L Yukon Denali gets 18 MPG at 63 MPH and 13 at 75 MPH. You think it’s the rpm’s that change the mileage, or the increased wind resistance of traveling faster? My thoughts are wind resistance.
It's hell eatin em live
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9114267
09/27/24 06:51 PM
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Joined: Aug 2009
Posts: 23,253
BigPig
THF Celebrity
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THF Celebrity
Joined: Aug 2009
Posts: 23,253 |
Just rolled 30k miles.
In the last 5k miles or so, fuel mileage has dramatically increased. I'm seeing 16-19mpg on the highway now instead of 13-14mpg.
I just rolled 11,000 miles, my avg is 19.3, lots of 80mph driving. Good to hear yours is finally improving
Last edited by BigPig; 09/27/24 06:52 PM.
Wade Dews, REALTOR ® Rendon Realty, LLC Frontline Real Estate Team www.RendonRealty.comWadeDews@gmail.com 214-356-2410 Up to 1% for closing costs for First Responders & Veterans Proudly partnered with Assist The Officer Foundation https://atodallas.org/
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: BigPig]
#9114281
09/27/24 07:24 PM
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Joined: Apr 2007
Posts: 61,991
BOBO the Clown
kind of a big deal
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kind of a big deal
Joined: Apr 2007
Posts: 61,991 |
Just rolled 30k miles.
In the last 5k miles or so, fuel mileage has dramatically increased. I'm seeing 16-19mpg on the highway now instead of 13-14mpg.
I just rolled 11,000 miles, my avg is 19.3, lots of 80mph driving. Good to hear yours is finally improving Nuts, 10 speed tranny must make a huge difference. Only time I ever get over 15 is driving back from mountains with a west tail wind. Life time average on my 15 is like 13.5
Bottom line, never trust a man whose uncle was eaten by cannibals.-Sen Joni Ernst
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: BOBO the Clown]
#9114866
09/29/24 01:42 AM
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Joined: Aug 2009
Posts: 23,253
BigPig
THF Celebrity
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THF Celebrity
Joined: Aug 2009
Posts: 23,253 |
Just rolled 30k miles.
In the last 5k miles or so, fuel mileage has dramatically increased. I'm seeing 16-19mpg on the highway now instead of 13-14mpg.
I just rolled 11,000 miles, my avg is 19.3, lots of 80mph driving. Good to hear yours is finally improving Nuts, 10 speed tranny must make a huge difference. Only time I ever get over 15 is driving back from mountains with a west tail wind. Life time average on my 15 is like 13.5 Yeah the 10 speed is great. Filled up in Vernon and headed east. This was the result of mostly 80mph driving ![[Linked Image]](https://texashuntingforum.com/forum/pics/userpics/2024/09/full-15111-432352-img_0386.jpeg)
Wade Dews, REALTOR ® Rendon Realty, LLC Frontline Real Estate Team www.RendonRealty.comWadeDews@gmail.com 214-356-2410 Up to 1% for closing costs for First Responders & Veterans Proudly partnered with Assist The Officer Foundation https://atodallas.org/
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Re: GMC AT4X 2500 HD 100 mile Review
[Re: txtrophy85]
#9114898
09/29/24 03:04 AM
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Joined: Oct 2004
Posts: 23,113
Superduty
"The Regulator"
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"The Regulator"
Joined: Oct 2004
Posts: 23,113 |
![[Linked Image]](https://texashuntingforum.com/forum/pics/userpics/2024/09/full-636-432360-img_3704.jpeg) 34 gallon tank.
'It's Only Treason if You Lose."
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