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General 6.7 Discussion (2011-2016) General 6.7 Discussion

Thread: 2011 vs 2015 Fuel milage & power Reply to Thread
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  Topic Review (Newest First)
08-21-2019 11:22 AM
18M_RWR I have a stock 2016 F350 CC DRW 4WD LB 4.30gears and recently towed a 4300lb SUV on a 1000m trip down to SC and back (over the Appalachians) running 65mph (mostly when on freeways +/-2050RPM) and the dash trip meter says averaged 12.4mpg. Unloaded on a 450m (90% freeway) trip a few weeks ago running 65-70mph the dash trip meter says it averaged 15.5mpg. FWIW
08-18-2019 12:19 PM
Jstahley I see 14 or 15 towing a 6x12 enclosed trailer. Thats going 55 going 75 its 12 or 13
Unloaded im at 19 going 70 and if i really try i can get it to say 21 is i stay about 70
Went up about 1mpg when it had surgery
08-16-2019 02:16 AM
lowmpg
Quote:
Originally Posted by Spaknives View Post
Hey Yall,
So today I test drove a 2011 f350 4 door short wheel base with the lariat package. I also drove a pretty much the same 2015. The dealer said the 2011 had a bad turbo on arrival and they replaced it.
Surprisingly the 2011 seemed a little more powerful and snappy. I drove each truck around about a 10 mile loop, and tried to drive each truck the same. I reset the mpg setting in each truck as I left the dealership. The 2011 said it was getting 14.8mpg when we returned. The 2015 said it was only getting 12mph. Can there really be that big of a difference in mpg? I would have thought the 2015 would feel more powerful and get better MPG, but it was the other way around.
Anyone have any thoughts or reasons why this was the case?
Thanks!
This is a really interesting thread to read. I wonder how many of the 15+ trucks have dropped even farther in MPGs after modifications? My truck went from around 20mpg brand new to around 14.8 mpg (I've tracked every fill up for 2.5 years) routinely now with mods (6" lift, 38x13.5x22 wheel/tire setup). Guys modding 15+ what are you seeing MPG wise?
08-15-2019 10:24 PM
Spaknives I went back and took the 15 for another spin. I went out on the hwy and went for a nice cruise. I reset the lie o meter when I left the dealership again. I drove through town and out on the open road. I was able to go out and drive at about 60 to 65 for about 15 miles one way then back to the dealership. I was getting about 15mpg this go round. I figure that's not to bad with a little bit of stop and go in town driving. Man these things have so much get up and go. They are fun to drive.
The 15 has around 56000 Mike's and is a lariat. At $40000 I don't think it is a bad deal. I have seen similar trucks in my area fo another 5 or 6 thou. Sure hope my other truck sells soon do I can jump on one of these. Thanks for all the input! Keep it coming!
08-15-2019 05:23 PM
Lightning546 I went from a 2011 F250 PS to a 2016 F-350 drw, ps.

I was getting 14-15mpg in town and 20+ hwy @74mph in my 2011, in my 2016 I am lucky to get better than 12-13mpg in town and 15-16 hwy @74 mph(empty), 9.9-10.2 hwy towing my 30' 5th wheel @65mph (9400 lbs), these are manually calculated numbers. For both trucks I always added Amsoil cetane boost at every fill up and each used Amsoil 15w-40 full synthetic oil, the 2016 is being switched to Amsoil 10W-30 full synthetic oil at it's next oil change. The 2016 has 19,500 miles on it, when I traded the 2011 for the 2016 it had 59,000 miles on it.

The difference in equipment between the 2 trucks is:
2011; 9.7L, short bed, crew cab, 2 wheel drive, 3.31 gears, train horns, bone stock with no modifications. It was struck by lightning while it was parked in my driveway, which fried every module in it, and it took 80 days in the shop to get it fixed, the biggest complaint I had about it was that it would go into a regen cycle every 75-125 miles and they could never figure out why. About 3 weeks after I traded it in the new owner showed up at my house because the dealer wouldn't let me delete my entire gps history out of the factory nav unit.

2016; 6.7L, long bed, crew cab, dual rear wheels, 4x4, 3.73 gears, train horns, the only mod is a K&N air filter and a dual remote Amsoil bypass oil filter system. When available it will get a Banks Derringer tuner.

Mileage has an effect on your mpg, after about 30,000 miles I noticed the mpg numbers going up with no change in the speeds or the way I drove it. The more miles you put on the engine the better your fuel mileage should get.

If you're considering deleting it, you have to ask yourself: Is it worth a $5,000 fine (if/when caught) for each piece of federally mandated emissions equipment I remove?

You should try to get a complete Oasis report from the ford dealers service department and read it before you make your purchase decision, you also want to make sure there are no outstanding recalls or TSB's for that particular truck.
08-15-2019 06:39 AM
james2488 Delete/no delete will make a difference, some guys say they see a drop some say they see an increase after delete. I personally would guess to see an increase as you don't have a forced regen every 500 miles or less but more power could also mean more skinny pedal resulting in less mpg.

I've had my 15 F350 CCLB SRW stock (waiting for warranty to expire) for about 3 years and it will very in mileage. When I was driving 70/30 highway/in town I was averaging about 17.5 mpg by hand on a tank, and now that I've switched to 40/60 I've dropped to around 14.5-16 depending on how I drive it. I've seen it up to 22mpg on back county 2 lane @ 55mph before a regen drags it down (my lie-o-meter is usually within +/- 1mpg of hand calculated so take that as you will on the 22mpg). Running 70 vs 65 makes a decent difference and running 80 is like 11.5-12. I've had a few good jogs with a car trailer (open and closed) and have usually ran about 9-10 mpg @ 70-75mph.
The 15+'s spool a smidgen slower so they don't have that instant snap but snaps with the turbo lights. I've also seen far fewer issues with the 15+ HPFP (may be due to less mileage and age) but they seem to be the better set up.

My $.02 on regens/emissions are they are BS. 8 mpg for 30 miles is a load of crap, you've now burned 2+ times the fuel than would have normally (that carbon still exists, Laws of Physics), you are also consuming a crappy corrosive liquid that comes in a plastic jug and cardboard box. I don't see how that extra consumption saves the environment at all with all the extra going into it. I can't wait to delete.
08-14-2019 03:36 PM
[email protected] I own a 2011 and average 15 MPG. I can baby it and get 20 MPG on the highway at 55 MPH. My 10,000 lb. 5th wheel mileage was generally 11 to 12. I have a pickup camper that usually averages 12.
08-13-2019 12:45 PM
brant_c I got 12.x this past weekend pulling 3.5 tons and driving around dirt roads empty
08-13-2019 12:25 PM
'16 KRLB City Slicker [quote=jman37;16315665]I feel bad for him.



I do too. Those mirrors are hideous. He's lucky he's taking the least ugly of the ugly twins out to prom because the new Chevy looks horrid in all aspects. Even die-hard Chevy guys are complaining about them.
08-13-2019 07:49 AM
beaureed445 I've had a '12 and now a '16. The '12 had a quicker spool, and better mileage. It was 16-17mpg before I deleted it. This '16 is in the 12-13 range (according to the dash). I dragged this load from OKC to Missouri and back a couple of weeks ago, and averaged 8.7mpg.
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