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Duramax 6600 Discussion Forum for the Duramax 6600 Diesel Engine, including the LB7, LLY, LBZ & LMM engine specific topics.

View Poll Results: LB7 Duramax local driving fuel economy (55-65 mph)
less than 15 mpg (US gallons) (55-65-mph) 95 7.72%
15-16 mpg 250 20.33%
17-18 mpg 332 26.99%
19-20 or more mpg 370 30.08%
Don't own an LB7 - just interested in the poll data 183 14.88%
Voters: 1230. You may not vote on this poll

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  #1  
Old 12-31-2004, 01:35 PM
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Fuel economy is one of the top 2-3 reasons why most people buy a diesel pickup.

What we want to do here is help determine what people are seeing for non-towing fuel economy in actual on-road use.

Let us know what your truck delivers.... This poll is for owners of the LB7 (2001-early 2004 model Duramax 6600 engines). We are assuming summer blend fuel.

You will need to vote before viewing the poll data. If you don't own an LB7, but would like to see the poll data, you'll need to first vote in the poll using the "Don't Own an LB7" selection for both the local driving and highway driving sections.

Round your fuel economy averages to the nearest whole number. For example a 16.4-mpg would be 16, a 16.8-mpg would be 17.

MP

[ 01-03-2005, 02:32 PM: Message edited by: More Power ]
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Old 01-01-2005, 06:00 AM
Kennedy
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I placed my numbers in the 15-16 off hwy, and 17-18 on hwy, but in reality, I run near 17 off hwy, and near 19 on hwy pretty consistently. I'm seldom down to 16 off hwy, and seldom in the low 18's hwy. Just did not feel that I quite made the next brackets...
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Old 01-01-2005, 03:42 PM
BobW BobW is offline
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More Power,
How about a second poll on mileage while towing. Might break it up into weight ranges.
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Old 01-02-2005, 06:31 PM
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Weight, wind drag and speed introduce a lot of variables when towing.... It'd be tough asking the right poll questions that would include all of the possibilities.

Open to suggestions....

MP
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Old 01-02-2005, 08:43 PM
Pfouts1001 Pfouts1001 is offline
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MP, it might be good to run a 3 different polls for trailering, one for pulling gooseneck and tag open trailers (utility trailers, machinery trailers, and open car haulers), enclosed tag trailers (car haulers and rv trailers), and gooseneck/fifthweel enclosed trailers (Car haulers and rv trailers)... and then in each class break down into weight ranges ie.

gooseneck and tag open trailers
3K and under
3-6K
6-10K
10-14K
14K and up

Enclosed tag trailers
3K and under
3-6K
6-10K
10-14K
14K and up

Enclosed gooseneck/fifthweel trailers
7-10K
10-14K
14K and up

additionally, give the respondents an opt out for each weight category as you have done on this poll so that people may just view the post. This will allow people to respond to the weights which they most pull

just my 2 cents
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Old 01-03-2005, 12:06 PM
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What towing speeds?

MP
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Old 01-03-2005, 02:07 PM
BobW BobW is offline
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45-55 mph
55-65 mph
65-75 mph
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Old 01-03-2005, 07:01 PM
Foley Foley is offline
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I hope I see 19-20 MPG some day out of my truck. Be curious to know how many of the 19-20 range are stock and how many of those are 6 speeds.
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Old 01-04-2005, 03:32 PM
Todd Manning
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I just did an extended highway trip and purposely drove between 55-60mph the whole distance to check my mileage. Ended up getting 23 mpg (Imperial gallons), so this 19 mpg US (assuming my math is right).

2003 LB7 D/A with Magnaflow 4" exhaust and K&N air filter.
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Old 01-04-2005, 03:36 PM
Todd Manning
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I just did an extended highway trip and purposely drove between 55-60mph the whole distance to check my mileage. Ended up getting 23 mpg (Imperial gallons), so this 19 mpg US (assuming my math is right).

2003 LB7 D/A with Magnaflow 4" exhaust and K&N air filter.
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