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04.5-05 LLY Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 02-10-2013, 09:51 AM   eBay Motors  #1 (permalink)
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fuel mileage

Looking at a used 2005 duramax has 176k on it. Wondered who has actual fuel mileage? I had a 2001 and got near 20 mpg empty and about 14 towing 6,500. Any advice would be appreciated as well as any pitfalls to look for i thins year.

any input on its value is cool too.
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Old 02-10-2013, 10:14 AM   eBay Motors  #2 (permalink)
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Your MPG will be a bit less than an LB7 because of the vvt turbo and emissions equipment but I still see 18-19 MPG highway unloaded.
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Old 02-10-2013, 10:18 AM   eBay Motors  #3 (permalink)
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My only mod is an AFE mouthpiece...I see 18-19mpg (hand calculated) empty and 11.5mpg when towing (7500lbs). I generally drive no faster than 65mpg, I am never in a hurry....

Cale
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Waiting to be done: 52 gallon Titan Fuel Tank (on the fence)

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Old 02-10-2013, 10:36 AM   eBay Motors  #4 (permalink)
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I get 17-18 in the summer, 15-17 in the winter. If I let it warm up often it might go as low as 14. Mostly hwy and 60 mph or less.


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Old 02-10-2013, 06:35 PM   eBay Motors  #5 (permalink)
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mtl..you have to let me know what the vvt turbo is..im still new to diesels..

thanks,
ketih
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Old 02-11-2013, 09:26 AM   eBay Motors  #6 (permalink)
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Flat ground at 70MPH empty I get 19. Towing 11k at 60 I get 11-12. I am stock other than the mods below. The truck weighs 7150lbs with a full tank.
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Old 02-11-2013, 09:36 AM   eBay Motors  #7 (permalink)
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Before tuner but with other mods listed in my sig:

18mpg unloaded cruising 70mph
16mpg unloaded city
10-11mpg towing 12K fifth wheel cruising 60mph

Great truck...
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Old 02-18-2013, 09:27 PM   eBay Motors  #8 (permalink)
 
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Hey im looking at buying a 2005 ccsb with 87000 miles. The guy just has juice with attitude and the cats taken out and a k&n intake. 6 inch lift and 35 inch tires and claims he gets 13 city and is not sure about highway. Is this true and what will my highway be roughly? Would efi live and exhaust help much?
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