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Old November 18th, 2012, 05:11 PM   #1
jeffandjess4806
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Default Ok Diesel guy/gals what king of real life MPG?

Post up what you drive and what real world MPG you get. City and highway.

Thanks!
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Old November 18th, 2012, 05:19 PM   #2
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06 Ram 2500 5.9 CTD, auto, QCSB, 73k miles, only mod is straight 5" exhaust.
I average 19 mpg with mostly highway driving. Ive gotten up to 21 on a long trip and get about 13-14 towing an equipment trailer with my jeep on it. Lowest ive seen was 11 towing the jeep through Kentucky.

Last edited by fittergirl; November 18th, 2012 at 07:38 PM.
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Old November 18th, 2012, 05:21 PM   #3
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These threads make me , cus you always get the retards that claim to get 37 mpg on 40s pulling a 50k pound trailer.
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Old November 18th, 2012, 05:23 PM   #4
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Quote:
Originally Posted by booblinker View Post
claim to get 37 mpg on 40s pulling a 50k pound trailer.
That sounds totally legit, I don't see the issue with that stat. Yours doesn't?
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Old November 18th, 2012, 05:26 PM   #5
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08 duramax. efilive tuning and 5 inch straight pipe. 15-16 city, on the highway ive seen 22
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Old November 18th, 2012, 05:27 PM   #6
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I do alot of city driving stop and go I Hate little cars I inspect home for Banks I do about 50 houses per day
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Old November 18th, 2012, 05:32 PM   #7
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93 yj 2.5 L.O. 5 speed but can't use 5th or sometimes even 4th depending on wind direction. Electric fan, 4.0 throttle body, and flowmaster. 40s, 60s, and 4:10s I've got as good as almost 10 Mpgs.

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Old November 18th, 2012, 05:33 PM   #8
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I have a 2007 classic gmc ext cab dually lbz duramax. It has just under 26,000 miles on it. I average 17 mpg highway empty. And loaded with all my gear and 28' enclosed trailer load with race car and all the gear. The trailer weighs around 11k I see 13 mpg. Truck is all stock no mods and running stock 215/85/16 tires. I did add at one time a k&n air intake kit and a edge programmer and my mileage dropped by 1 mpg. So I took the stuff off and sold it.
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Old November 18th, 2012, 05:37 PM   #9
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01 ex cab lb cummins auto 5 inch exhaust and edge 4x4 with 4.10 and 35.
22mpg empty on high way at 65
3k trailer 18 mpg
18k load 15 mpg
around town 16 or so
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Old November 18th, 2012, 05:37 PM   #10
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Just realized this was for diesels. Oh well
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Old November 18th, 2012, 05:51 PM   #11
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1999 Chevy k2500. 6.5L Turbo Diesel, 35" tires, 4.10 gears, 16-19 mpgs mixed.
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Old November 18th, 2012, 05:54 PM   #12
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02 CTD 6 spd manual, 35" tires.
20-21 on spressway with r's round 1750. 65/70mph
17-18 at 2000 rpms going 75/80moh


With trailer, depends totally on load, and trailer. Between 12-17, 10000#-5000#.

Mixed driving i get 18 mpg





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Old November 18th, 2012, 06:05 PM   #13
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My super duty gets an average of 12.4 MPG, I will not tell you any stupid fucking stories about my bully dog system getting 700 horse power and 35 miles to the gallon.

By the way OP where does your wife work, I am wondering about Jess?
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Old November 18th, 2012, 06:08 PM   #14
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03 Jetta TDI 300,000 miles. chipped, bigger injectors 2.5" exhaust
45 mpg driving spiritedly
48-49 mpg driving 65 mph tops
best ever 54.3 before low sulfur diesel.
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Old November 18th, 2012, 06:19 PM   #15
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05 F350 CCSB 6.0 auto, 3.73, EGR delete, 4" turbo back and a programmer. Get 17 highway running 75-80, I do stop and go driving often which brings the city driving down into the 10-12 range.
Then I plow snow with it and get 8-9.
I towed my new 30' fifth wheel for the first time the other day and got 11-12 on the 70 mile trip, mostly on the highway.

BTW, who cares, I did not buy a truck this big, to pull even bigger trailers to get "economy". I sold my 99 6.0 GMC 2500 and that go even worse mileage and could not handle the loads, although it was a great truck.
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Old November 18th, 2012, 06:25 PM   #16
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'00 7.3 eclb super duty with DP tuner, intake, 4" downpipe to straight pipe, 265/75r16's 3.73 gears, and 6 speed stick.
In the city I usually see 16-18 (I've got as low as 14 on winter fuel) I don't drive too aggressive but not like a grandma either. On the freeway I have seen 22 if I keep it around 65. I don't really tow far enough to accurately calculate a loaded mpg. I don't see much of a difference with dirtbikes and gear in the bed though.
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Old November 18th, 2012, 06:53 PM   #17
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07 6ltr Powerstroke- I can get around 17 mpg if I keep my foot out of it, but typically I get 12-14.
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Old November 18th, 2012, 06:58 PM   #18
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02 ccsb Ford 7.3 with a Dptuner chip,4" exhaust. I get 14-17 most of the time, have got as good as 20 on the hwy just have to stay under 67mph. Just bought a 00 Jetta TDI 5 spd. Hoping for 45-50 with that.
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Old November 18th, 2012, 07:02 PM   #19
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94 dodge 3500 2wd auto. Rolled over 150k mark today.

Pump needs to be tuned. PO didn't know what he was doing 100%, waiting to get my boost/pyro on before I tune the p7100

That being said, I've been putting on about 400 miles of pure highway on top of country driving. I average about 17.5 going 70, and 18.25 going 65. This is with 3.54 gears and 31" tires.

I'm pretty confident I can get that over 20 when I tune it...

Towed an xj across the state, averaged 16.5 round trip. (half empty trailer, half loaded)
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Old November 18th, 2012, 07:06 PM   #20
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Is the added cost of buying the diesel and maintenance of the diesel going to offset the fuel savings? I know they tow better but is there any real savings buying a diesel?
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