miles per gallon - Page 2 - Chevy and GMC Duramax Diesel Forum
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post #11 of 23 (permalink) Old 05-30-2013, 07:29 PM
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Quote:
Originally Posted by Goose2448 View Post
He's got a LML

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kinda figured he had something newer just had to poke a little fun

-2012 DENALI 1500

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post #12 of 23 (permalink) Old 05-30-2013, 07:37 PM
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19-23 on the highway at 65-80 mph, speed dictates. Towing depends on speed and weight, at 75mph and 10k lbs I get 11.5-12.

2007 CCSB LBZ.
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post #13 of 23 (permalink) Old 05-30-2013, 08:28 PM
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Before the tires I was getting 19-21 out on the road and around 15-16 in town. Now it's about 18+\-mpg on the road and around 12 to 14 in town depending on my driving mood swings

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post #14 of 23 (permalink) Old 06-01-2013, 05:56 PM Thread Starter
 
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Thanks guy i am looking for a 2500hd, and was just trying to see what they get for gpm.
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post #15 of 23 (permalink) Old 06-02-2013, 06:01 AM
 
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The info here seems to be dead on with the numbers Im getting as well. 2013 crew cab 2500hd 4x4. 18.2 in typical hilly TN "backroads". I havent had a chance yet to put her on the interstate and see what she does, but from the numbers Im seeing, Im expecting 20+ pretty easy.
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post #16 of 23 (permalink) Old 06-02-2013, 06:28 AM
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Highway cruising 75-80 w/cruise I get 18.5-19
In town, probably 13-14
When I am towing my 5th wheel (14,000) cruising 70-75 I have been averaging 10.2-11.4 depending on the number of continental divides I have to cross!

2016 Chevrolet 2500 CC/SB LTZ Z71
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2013 Honda CrossTour, 2006 GMC 2500 LBZ (sold), 2003 GMC LB7 CC/LB (sold) , 2012 Keystone Alpine 3600RS
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post #17 of 23 (permalink) Old 06-02-2013, 07:38 AM
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Avg hwy 18, city avg 14, & towing avg 9.


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post #18 of 23 (permalink) Old 06-02-2013, 09:33 AM
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HIGHWAY
DIC Shows 19
Hand Calculated 18.5

CITY
DIC Shows 14
Hand Calculated 15

MIXED
DIC Shows 16.5
Hand Calculated 16.7

These are all averages. All stock with about 200-300lbs of tools at all times and running 285/70/17.


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post #19 of 23 (permalink) Old 06-02-2013, 02:10 PM
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I never trust the DIC! I have always hand calculated my mileage. My 04 LB7 would routinely get between 11-13 city/western pa backroad driving, and between 19-21 highway driving empty. Between 10-12 city/backroad and 17-19 highway loaded.

Now, my 13 LML blows that out of the water so far! Keep in mind that as of typing this I have only 3200 miles on it, but so far my hand calculations are as follows. Between 13-15 city/backroad and up to 27 on the highway!!!

Just yesterday I had to drive up to Painesville Ohio. Topped off the tank before I left. I have the 36 gallon tank. Took I-79 to I-80 to Ohio 11 to US-6 to Ohio 608 as my route. Round trip of 267 miles, and burned just two butthairs over 1/4 of a tank for the whole trip. I calculated this trip out to 26mpg. This was also factoring in the added 1100lbs of cabinetry I had crammed in the bed.

So, to answer the OP's question... It depends on the persons driving habits, the roads, and speeds. Brand new, I am actually not surprised my LML is getting as good of mileage as it is... I am pretty sure what I am getting now, is about as good as it is going to get. ANYONE tells you they are getting better than 30 highway, or say... 20 city... Call bull$hit!!! LOL

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Stock, for now...
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post #20 of 23 (permalink) Old 06-03-2013, 01:15 PM
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Absolute best I have ever got is 20.6 MPG. That was empty highway miles at 60 miles an hour. I let the wife drive home that trip and now I have to listen to her tell me I need to slow down so we can get better mileage! Best I (myself, not the wife)have gotten is 19.8 empty, that was driving about 68 with a slight tail wind. I usually get about 16 -17 around home, that is mixed freeway and in town.

Towing a 7500 lb travel trailer, I get 11-12 MPG usually, depend on the hills I have to go over. Have got as low as 9 once with mostly in the hills but I don't slow down much going up hill.

Stan

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