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  Topic Review (Newest First)
10-20-2019 01:10 PM
Wyo George
Quote:
Originally Posted by aogmitch View Post
I just got to witness a good mpg test of my truck compared to a ‘17 F350 short box. A group of us has made a trek from western Washington to southeast Wyoming a few times to hunt. I have always taken my truck and towed my 27’ Enclosed trailer filled with quads, wall tent, freezers, and all the rest of our gear. I have consistently achieved 10.5-11 mpg, hand calculated on every trip. My truck has done this trip 5 times. Speeds are generally 75-85 mph. Empty, my road trips generate 18.5 mpg, but everyday mixed driving I am right at 14.5 mpg.
Well this year, we took my buddies new to him ‘17 Ford and my trailer. His truck has 35k on it and is completely stock. Our mileage there and back was a pretty solid 9.5 mpg. Truck pulled the load easily through all the passes, though it was obvious mine was putting more power to the ground. I really thought the mileage would be a little higher for some reason, but it still was a pretty good comparison test. I did all the mpg checks, hand calculated, and was suprised to see his display was always right on with my calculations, if it was not exact, it was off by .1. My Dodge isn’t even close.
Interesting. My work truck is a Ford and it consistently gets better mileage than my Ram and the Ford has more power (both stock) one of my biggest complaints with the Ram is the inaccurate EVIC when compared to how accurate the Ford has always been. Good to see I’m not the only one to notice that.
10-20-2019 11:28 AM
aogmitch I just got to witness a good mpg test of my truck compared to a 17 F350 short box. A group of us has made a trek from western Washington to southeast Wyoming a few times to hunt. I have always taken my truck and towed my 27 Enclosed trailer filled with quads, wall tent, freezers, and all the rest of our gear. I have consistently achieved 10.5-11 mpg, hand calculated on every trip. My truck has done this trip 5 times. Speeds are generally 75-85 mph. Empty, my road trips generate 18.5 mpg, but everyday mixed driving I am right at 14.5 mpg.
Well this year, we took my buddies new to him 17 Ford and my trailer. His truck has 35k on it and is completely stock. Our mileage there and back was a pretty solid 9.5 mpg. Truck pulled the load easily through all the passes, though it was obvious mine was putting more power to the ground. I really thought the mileage would be a little higher for some reason, but it still was a pretty good comparison test. I did all the mpg checks, hand calculated, and was suprised to see his display was always right on with my calculations, if it was not exact, it was off by .1. My Dodge isnt even close.
10-19-2019 08:49 PM
CTD_CR924 My 04.5 QCSB NV5600 on 37s, 6 inch lift and 4.56 gears managed just over 18 MPG hand calc'd. RPMS were between 2100-2250 speed was around 70ish MPH and cruise control was on.
10-17-2019 02:47 PM
Grit dog
Quote:
Originally Posted by VADERPOWER View Post
As of right now, I can do over 800 plus miles per tank at 55mph easy. Keys to this,
Tire pressure I. E. Max the fronts, at least 65min. Rear.
Weight, with my 2wd, qc sb, with weight removed, I'm at 5950lbs. with a 1/4 tank of fuel.
Speed, anything over 60mph is killing you.
From a stop, never go over 6/8 pounds of boost, ever.
Tuning, fo sho, it truly does help tons, I just have a old smarty jr set on kill( max on all settings except torque management). Just abideing by those will help your mileage YUGE. From there, its the devil in the details like Steve has done exceptionally well.
True story, but I won't live long enough to drive freeways at 55-60mph! For fcks sakes, I'd have another birthday before I got to work in the morning driving like that!
And, I'd get flipped off and run off the road if I was trying to perfect my 10 second 0-30 time away from every stoplight and my how low of rpms can I possibly run in OD without lugging the engine strategy.
10-17-2019 02:41 PM
Grit dog
Quote:
Originally Posted by GNR View Post
Just wondering why the new trucks with more power and more emissions seem to be more fuel efficient than the good ole 5.9?

I have a 2006 with slightly over sized tires (about 32" BFG AT KO's), drive the speed limt and the best I have ever gotten is about 18/19mpg on the highway.

THanks.
I want to see the new trucks that are actually getting better mileage than an apples to apples good ole CR 5.9. They are a fallacy, just like the guys who get 25mpg in their CR 5.9s, it's all relative. Throw the same bull chitters on mpg with new trucks with the group of bull chitters with older trucks and it all balances out.

Yes the old 12Vs and early 24Vs were more miserly, you could also outrun them with a model A ford too. CR engines a bit less mpg. 2008 emissions through 2010/2013, big hit in mpg. DEF trucks, mpg back to similar to CR 5.9s. That's what i see has happened.
The newer more powerful engines actually aren't quite as good on fuel, but other refinements (def, programming, more trans gears and higher rear gear ratios, primarily, secondary things like front CAD) have allowed the new trucks back into 5.9 CR mileage territory.
10-15-2019 09:41 PM
timb0 My old 90 12v gets 22 mpg normally. On highway about 23 if I keep it at 65. Towing goes down to 16 or less.
10-13-2019 05:51 PM
spooled05 Attachment 858315
10-13-2019 05:51 PM
Pappy4430 My 04, 3500 dually nv5600, is getting 19.5 mpg with no trailer on. (55-60mph). It weighs 8500# empty. Now up the speed to 70- 75, it'll drop some. But I come from the gasser gm truck world, with a truck weighing same amount, I was getting 7-10mpg. Also my 2nd gen 360 Dodge truck only got 8-9mpg.

So I'm happy as can be with this 5.9 Cummins truck at the moment. (This #9000 dually gets same mpg as my wife's Lexus rx300&#x1f609
10-13-2019 05:48 PM
spooled05 I put a Laramie bumper cover which is around 1-1/2” lower than the factory bumper and rigged the factory air dam to it mainly for looks but hoped it would help also . Got 35” mud tires which don’t help either .
10-13-2019 05:45 PM
steve05ram360
Quote:
Originally Posted by spooled05 View Post
No wonder you guys get such good fuel economy, my truck is 5360 on the rear axle and 5120 on the front . I run 80-85 when on the hwy and can squeeze 13 out of mine
you sir need that 2nd front air dam... i suspect, no proof though, that it is good for 1 mpg at high speeds... $30-35 in parts @home depot...
10-13-2019 05:37 PM
spooled05
Quote:
Originally Posted by VADERPOWER View Post
Weight, with my 2wd, qc sb, with weight removed, I'm at 5950lbs. with a 1/4 tank of fuel.
Speed, anything over 60mph is killing you.
No wonder you guys get such good fuel economy, my truck is 5360 on the rear axle and 5120 on the front . I run 80-85 when on the hwy and can squeeze 13 out of mine
10-13-2019 02:12 PM
CumNewb Subbing
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