Dropping fuel mileage

Short Bus · Sep 13, 2013

New the truck got 12-13 pulling my 5th wheel and 18-19 on the hwy. now it's getting 9-10 towing camper and 14-15 hwy with 4000 miles on it. It seems like its cleaning Dpf more and more often. Runs good just burns a lot of fuel. Is there anything I can check before I take it to ford? I have a snap on scanner that is current if that helps any.

RedRice589 · Sep 13, 2013

Sounds like it is running weird or you don't do enough highway driving mine might clean ever y 250 miles less when I'm in town a lot but very little when towing. Maybe twice every thousand miles.

Short Bus · Sep 13, 2013

I have been pulling my camper a lot lately, 50-100 miles each way. However I do generally let the truck idle when I get fuel or stop for a drink since the dogs are always with me. I just didn't think 5 min or idle time here or there would hammer my mileage that bad.

CATDiezel · Sep 15, 2013

Delete that thing and be done with it Luke! The first time I had to buy urea was enough to convince me!

Mine did the same thing. Deleted and on long trips to Pa and back it honestly gets between 20.5 and 21.5. With 5 over the speed limit.

Short Bus · Sep 15, 2013

I'm thinking about it, but I hate to do that and lose the warranty. Knowing my luck it will blow up 5 miles after I delete it lol

Tom@BigTimeKustomz · Sep 15, 2013

I noticed my mileage went down a little too and I am approaching 5k miles. I attributed it to more idle time and I'm towing my trailer a little more. Temperature is changing also here so I figure that has something to do with it.

03-Blue-Powerstroke · Sep 15, 2013

My truck is the opposite, it's getting better. I just hit 4000 miles and Im up to 18mpg average so far. I don't idle it for more than a minute though.

Dzchey21 · Sep 15, 2013

Short Bus said:
I'm thinking about it, but I hate to do that and lose the warranty. Knowing my luck it will blow up 5 miles after I delete it lol

Im the same way. I've been happy with mine and like others seams the longer I go the better it gets. Hopefully it's a change in fuel or something silly

Sent from my SCH-I545 using Tapatalk 2

CATDiezel · Sep 15, 2013

Maybe since the farmers alminac predicted a strong cold winter they already put out winter blend! Lol. -- just delete it! Won't regret it... It runs SO much smoother!

Short Bus · Sep 16, 2013

I called my vendor and asked that they put my name on an unlocked tuner if they get one. Won't delete unless mileage keeps dropping, just want to get one bought while I still can.

CATDiezel · Sep 17, 2013

I granny mine around. Even deleted. I figured what the heck. Just get it over with and be done. I had a windshield "howling" problem the dealer refused to fix so after that I said whatever and deleted it... Fixed the windshield myself and moved on.

My wife goes and gets groceries for me and my boy in it... I didn't want anymore phonecalls asking if its ok to shut the truck off because it just started a regen! Haha. Took care of that problem straitway.

deerezilla · Sep 17, 2013

I know what you mean Luke I just got my 2014 last week. I don't like the regen thing only has 400 miles on it. I did change the oil to Schaffers 9000 5w40 and filled it up the first time with diesel treat maybe that will help with mpg

CATDiezel · Sep 17, 2013

deerezilla said:
I know what you mean Luke I just got my 2014 last week. I don't like the regen thing only has 400 miles on it. I did change the oil to Schaffers 9000 5w40 and filled it up the first time with diesel treat maybe that will help with mpg

youll have fuel contamination in the oil... as with any DPF engine. Might as well get rid of the problem STRAITWAY!!

uke:

Dzchey21 · Sep 17, 2013

deerezilla said:
I know what you mean Luke I just got my 2014 last week. I don't like the regen thing only has 400 miles on it. I did change the oil to Schaffers 9000 5w40 and filled it up the first time with diesel treat maybe that will help with mpg

These things don't regen nearly like the 6.4s did 400 miles is pretty good, 6.4s will regen about every 100 miles.

Also 6.7s dont fuel dilute like 6.4s. I sample my 6.7 and its never come back with anything over 1% fuel dilution (6.4s have 5% pretty normal)

My main concern would be egr anyway as its hard on cylinders ect. but that being said bone stock 6.7s are lasting 250k miles plus with little to no issues stock. I cant say a tuned and abused one will do that or not

Tom@BigTimeKustomz · Sep 24, 2013

5400 miles and I just got 395 miles out of a tank when I'm used to 450+ every other time. Highway driving went down some, so maybe its just because I'm doing more city driving?

Dzchey21 · Sep 24, 2013

winter fuel too

Tom@BigTimeKustomz · Sep 24, 2013

Thats what I figured too. Oh well, still love the truck.

powerstrokin15 · Sep 25, 2013

my dads 6.7s mpg are dropping lately too. he's deleted. got like 9mpg towing this weekend. which I way lower than normal. I think winter blend hit us early this year

Eric@HoldersDiesel

Short Bus · Sep 26, 2013

We better not be getting winter blend here for awhile, still 85-90* here most days!

Short Bus · Oct 2, 2013

Got an a exhaust and tuner.... I feel like a kid on the night before Christmas thank god fall harvest is here and I'm too busy to *** with it. I will keep my warranty for another month or so lol