PS 6.7 ?
Otherwise, the Ford 6.7 seems bulletproof for the most part.
Part of the exhaust fell off in 2018 and a straight pipe replaced it. An H&S tuner was used to make sure it would run. I leave it in "stock" mode and turned max boost down to 23# if I remember correctly.
I remember reading something about ceramic bearings in the turbos failing under high boost conditions so I set a limit on it when the exhaust fell off. I kept the stock transmission tune, tried the H&S and it was way too hard shifting, that lasted a couple days before I switched it back to stock. The EGR is still there, but unplugged. I have the block off plates but have been afraid of removing the EGR cooler due to reading so many stories about snapping the bolts and needing to drill them out. I have an AFE intake on it with a oil-free reusable air filter. Other than a couple sets of tires, regular oil changes, a few accessories added and a couple Odyssey batteries I've done nothing else to the truck. Well the hood was replaced back in 2022 when a neighbors tree lost a large branch in a wind storm and landed on my truck. I use a fuel additive at most fill-ups, hot shots EDT during summer and their anti-gel in the winter. I run #2 most the year, but during winter due our cold temps here I run #1/#2 blend and when we get that few weeks a year of -20 to -30 temps I will run straight #1.
That truck has taken me into the mountains up trails you should never take a big truck like that, sometimes dragging my camper behind me. It's dragged our camper to out to Washington state and back, also been to California dragging a utility trailer w/motorcycle.
The only issues I've ever had with it were a failed downstream EGT sensor, that would have been 2016 and my first experience with "de-tuned" mode with the big orange wrench on the dash display. Wouldn't have been so bad if it weren't for the fact we were out in the Missouri Breaks hunting elk and were 20 miles from any pavement and 100 miles from anything most would call a town.
The following year, hunting once again, I had limited power mode once again, this time due to DEF tank heater. This triggered the exhaust to fall off.
I couple winters ago I forgot to add anti-gel and top off with #1 which resulted in low fuel pressure when it was around -30F. Had to wait a few days until the temps were back above 0 and things thawed out. Not sure if I gelled, had water in fuel or a combination of both. Its only happened that one time.
I use Royal Purple 5w40 oil w/Motorcraft filter and replace the fuel filter with a Motorcraft filter when I change the oil.
All that to say, my 6.7 has treated me very well and I know it doesn't have the mileage on it that many others do but it seems to me if you take of them they will take care of you. That could all change tomorrow though, now that I have said something about it.
If there are issues I am supposed to be concerned about please let me know.
This is my first diesel pickup and know my way around the classic trucks but this thing is like a spaceship compared to my '79 F150.
My first impression is they sure could have had something fairly good, but really missed the mark in a huge way. I guess its the now modern way to not try, seems that way with everything in the automotive world now.
Just wondering if some of these 6.7s with main and rod bearing problems could be coming from...
I know there's way more knowledgeable folks here than myself, so I'm asking for a response to this and to Dave's concerns about the 6.7. I'd love to know the conditions of these trucks instead of just a general statement such as MY, mileage and tuned or not.
Last edited by Overkill2; Mar 20, 2025 at 09:34 AM. Reason: Add to post
Just wondering if some of these 6.7s with main and rod bearing problems could be coming from...
I know there's way more knowledgeable folks here than myself, so I'm asking for a response to this and to Dave's concerns about the 6.7. I'd love to know the conditions of these trucks instead of just a general statement such as MY, mileage and tuned or not.
IIRC the video I watched, Bill lamented that it was due to "lugging" in OD. Recommendation was to keep the rpms up (higher) while the engine was under load.
Ford Trucks for Ford Truck Enthusiasts
You can't blame equipment for breaking when it's misused or abused.
Same could be said for modifying the tune in the ECM, just because you can crank the power up, doesn't mean you should especially if you're hauling a load.
The higher the performance the lower the longevity has been true since people started tweaking their engines to get more out of them. I'm guessing that was shortly after the second horseless carriage was built and there was a race between two enterprising fellows.
I too would be curious to know more about the conditions of engine, model year, how it was maintained etc before jumping to any conclusions as to why the bearings were ruined.
I'm grateful for YouTube since I need to see things to understand a process best, but it sure has given a platform to a lot of people to spread their opinions far and wide, which is fine, but that doesn't make their opinion accurate or mean it should be taken seriously. Seems far too many people believe everything on the Internet is true.
You can't blame equipment for breaking when it's misused or abused.
Same could be said for modifying the tune in the ECM, just because you can crank the power up, doesn't mean you should especially if you're hauling a load.
The higher the performance the lower the longevity has been true since people started tweaking their engines to get more out of them. I'm guessing that was shortly after the second horseless carriage was built and there was a race between two enterprising fellows.
I too would be curious to know more about the conditions of engine, model year, how it was maintained etc before jumping to any conclusions as to why the bearings were ruined.
I'm grateful for YouTube since I need to see things to understand a process best, but it sure has given a platform to a lot of people to spread their opinions far and wide, which is fine, but that doesn't make their opinion accurate or mean it should be taken seriously. Seems far too many people believe everything on the Internet is true.
So many Harley owners like to lower the RPM to make it sound better, but you're literally beating the **** out of the engine lugging it.














