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8.49 MPG

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Old May 13, 2015 | 08:18 PM
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Laughing Gas
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8.49 MPG
Hand calculated grossing 23,000lbs through a lot of mountains.

Thoughts?
 
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Old May 13, 2015 | 08:39 PM
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So your towing about 15,000 lbs through mountains ?
That in itself is something to be said..

Kyle
 
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Old May 13, 2015 | 09:00 PM
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Bout right
 
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Old May 13, 2015 | 09:13 PM
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Originally Posted by 90pioneer
Hand calculated grossing 23,000lbs through a lot of mountains. Thoughts?
That weight and Grade.... You can expect to loose about 1/3 of your normal mileage. So, I "guestimating" you're getting about 13 - 15 MPG not loaded? How was your Oil Consumption?
 
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Old May 14, 2015 | 02:21 AM
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Done the trip many times before. 1100 miles total. Zero oil consumption. DP tuner 80 tow, and some other mods. 3.73 gears SUCK.

Stock trans cooler with two temp gauges... never gotten above 190*... which must be some miracle.

Driving empty around town i get 11mpg and burn about one quart per 1k miles.
 
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Old May 14, 2015 | 02:26 AM
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Laughing Gas
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Originally Posted by Macmathews
So your towing about 15,000 lbs through mountains ?
That in itself is something to be said..

Kyle
Alaska mountains... ever driven out of valdez? Massive grade that goes on forever
 
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Old May 14, 2015 | 05:29 AM
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Originally Posted by 90pioneer
Done the trip many times before. 1100 miles total. Zero oil consumption.
That is excellent!

Originally Posted by 90pioneer
3.73 gears SUCK.
It's a trade off. In this application you would have actually gained some MPG. Although un loaded your paying the Piper.

Originally Posted by 90pioneer
Stock trans cooler with two temp gauges... never gotten above 190*... which must be some miracle.
Awesome

Originally Posted by 90pioneer
Driving empty around town i get 11mpg and burn about one quart per 1k miles.
Your Engine seems to be very sound.

Tom
 
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Old May 14, 2015 | 03:37 PM
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hydro man 17
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11 MPG unloaded sounds a bit low to me, I get that much towing my 11K fiver in the mountains. Highway/town in the hills empty about 17 MPG AVG. (3.73 gears)
 
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Old May 15, 2015 | 08:34 AM
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16-19 MPG empty with 3.73 gears and the weight of a 4X4 with a topper.

I'd stop using that 80 HP tow tune, and go to something more like a 40 HP tow tune. What are your EGTs doing?
 
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Old May 15, 2015 | 10:28 AM
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Originally Posted by Tugly
16-19 MPG empty with 3.73 gears and the weight of a 4X4 with a topper.

I'd stop using that 80 HP tow tune, and go to something more like a 40 HP tow tune. What are your EGTs doing?
EGTs are usually decent but occasionally I will have to back off or downshift to keep them in check going up hills. I watch them closely.
 
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Old May 15, 2015 | 02:44 PM
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Your towing mpg sounds good to me. I see between 6-10 towing about the same weight in the mountains of Colorado.
 
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Old May 15, 2015 | 06:25 PM
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Originally Posted by 90pioneer
Hand calculated grossing 23,000lbs through a lot of mountains.

Thoughts?
Same with me. 8-9 mpg average at 24k gross through one mountain after another. Several steep grades of course.
 
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