I've seen people put crazy #'s on mpg, I'm not saying that you can't get good MPG, but most times it's a single event. Like say your heading east from Col. To Kc. The wind is almost always out of the west so you have a 20-40% drop in wind friction. And say your empty w/tailgate down, full of fuel and don't stop to pee. The trip I'm describing was 1 of mine about a year ago when diesel was +$4 per gal. When I got to Kc it took 16 & a 1/2 gal to fill'er up. That works out to about 31mpg. Since this was my business truck I kept milage records from Jan 1 to Dec 31. The truck normaly averaged 21. This was a 93 GMC 6.5 TD 1/2 ton auto O/D w/3.42 gears that I drove 80mph on the interstate.
On the other hand in a similar circumstance I got 22mpg in a 1ton dually crew cab 92' f350 7.3 IDI non-turbo and averaged 11mpg for the year. I guess it's just a case of where you are and what your driving. |
Well said Joe Dad
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Since I have changed jobs I am driving the state routes at 55-60 vs highway at 70-75 and I now get about 17-17.5. I am messing with the settings on the comp to try for best mileage and so far 4X4 with the tap turned off works the best. 5X5 with no tap lost 2MPG!!!
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Never have gotten better them 21-22 on the HWY, but I normally go the speed limit +5. If I do 19 or better I'm happy with ahead wind 17 at best. I have since straight piped, tuned, and gotten larger MT tires, so who knows now. It looks so far like it maybe worse.
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I know diesel power magazine did an mpg test a while back and the winning truck was a regular cab newer duramax with EFI live tuning and a couple other mods and it got 30 mpg.
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Originally Posted by 4x4ram
(Post 328257)
I know diesel power magazine did an mpg test a while back and the winning truck was a regular cab newer duramax with EFI live tuning and a couple other mods and it got 30 mpg.
I've been trying to hunt down a test like that for a Duramax, but all I could find were the 7.3L and 99 Cummins tests, and I've been eager to see what someone could do with a Duramax. EFI live on a 2wd regular cab I imagine could get 30 easy considering early Duramaxes can get 23mpg bone stock. It seems like 30mpg is the magic number. |
Originally Posted by K50
(Post 306516)
Any number over 15 certainly is good, especially with the way I drive in the city :w2:
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16-17 everyday driving and 20 or 21 highway
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There is definitely something wrong, I have almost the same setup and I am getting around 18 on the highway, I am a little lower and that may have something to do with it...
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