Imarkdirt

I don't put much stock in the mileage estimation, but the fact the tank level hasn't dropped at all is bothering me. I had bad luck with my last truck (an F150 with 3.5 ecoboost) so was hoping this would make up for it. I am not towing, but I keep 700 pounds or so in the bed at all times with my bedslide and camper top. IDK what is going on with it. Thanks for your input.

Update: Still no change in mpg. It also hasn't popped any codes or check engine light warnings. Odd thing is that the DEF tank mileage indicator, which originally showed 6500 miles to empty when I filled that tank up, now says 4500 miles but the tank shows 100% full. I have put approximately 1200 miles on it since putting DEF in it. I think it is going to need some time at the dealer though to get this sorted out. Can't say I am looking forward to that.

I looked through all my settings. It wasn't there either. Not sure what else I can do but wait for a light and take care of it then. Thanks for your help.

Thank you for the information. I have never seen anything on the dash regarding the exhaust or that the filter is clogged. My friend who has had two of these 6.7's (a 2016 and currently has a 2011) said when his goes through a cycle it is pretty evident and he gets a light on his dash. I have never seen that at all. My trips are generally not short. I routinely travel 40 to 50 highway miles at a time. I honestly thought it was smart enough to take care of itself as long as I kept the DEF tank with fluid. If I find out what the cause is I will reply with the answer.

Thanks for the tip. I will keep that in mind.

First the niceties. Thanks to everyone here. I consider this my first stop for up to date information and honest answers. Now the problem. I have a 22 F250 Platinum with the 6.7. It currently has 7800 miles on it. When this truck had approximately 3000 miles I saw that the DEF tank was half full, and since I was at walmart, I got a jug. I added the 2.5 gallons and thought nothing of it. Immediately after, say within 50 miles, I noticed a drop in mpg and the truck felt more sluggish. This wasn't .5 of a mpg, this was 2.5 mpg. From a solid 19 to 16.5. I didn't think too much about it, blamed it on my heavy foot from time to time, and kept on driving. Not long after, I got my first check engine light and the dreaded 50 miles to 50 mph warning. I took it to two dealers. The first basically wanted me to leave the truck for a week while they did nothing to it, but the second was able to help me that day. Just like most here, it is a work truck with bed slide and camper top so I can't just leave it or switch vehicles but I digress. That dealer told me the injector was bad for the DEF, replaced it under warranty and sent me on my way within 2 hours. Fast forward to last week when filling up at a truck stop, I noticed that I had 500 miles to empty for the DEF again. I used the pump to put 6.2 gallons of DEF in it and filled er up. Strangely now I seem to be having the exact same issue with it as I did when the injector went bad the first time. My mpg has dropped to 16.5 again, and the truck is definitely down on power. So far I haven't seen the check engine light nor have I gotten any warnings, but I am concerned that something is terribly wrong. First, am I doing something wrong? I don't believe I am, but want to ask. Secondly, what could be happening to my basically brand new truck? Any help would be greatly appreciated.

Finally got it. Leer with the Leer locker and I had a bed slide installed as well.

CF? Sorry I don't know that one. According to the sales manager mine is one of 28 vehicles in that yard to be delivered. All have been there weeks. He probably wants them as bad as I do.

I asked about that and the sales manager said it was almost as hard to do as getting it delivered. Mach E added 4 more days just now. Oh well.

Yeah this appears to be one very large boat with people who have been left, how can we can we say this delicately..without much in the way of information regarding their orders or what they should do to place an order that can be built. I honestly thought my March order would get built soon and that I would have a truck by August. Now it could be December if the Thanksgiving holiday gets in the way.

I wonder if the Mach E tracker will go negative days? It has added 4 and 6 days at a time multiple times. This is the first time it has read 0 days.

Yeah. Same. Most to Alabama are 12 days. I am at 35 after 205 days to get built.

What was your transit time based on the Mach E tracker?

There has to be some recourse to get it delivered. He says he has talked to his for rep but that has done no good whatsoever. Scheduled delivery time is 18 days. We blew past that weeks ago. Just venting I guess more than anything but in my head it is beyond ridiculous.

What can I do about a dealer who can't seem to get my truck from the rail yard to the dealership? Mine has been in transit since the 11th of October and sitting in a yard since the 25th. Northeast Alabama is where my dealer is and my truck is in Atlanta. He says mine is marked HOT and has been for 2 weeks. My order was placed 241 days ago. E: I am working directly with the sales manager on this to boot. It's been the most frustrating experience ever. My house took less time to build than this truck.