Loss of power at 50mph violently shakes

[Sholmes1990]

Hi guys... I'm brand new to this site still learning my way around it. I've seen a couple post on here so you guys are real knowledgeable. I bought a 2007 f250 6.0l back in June last year bought it with 76k on it it now has 86k I've had the oil changed once and I'm goin to do it again this weekend. I absolutely love this truck. Haven't done really anything maintenance wise since ive bought it. Well this morning on my way to work I jumped on the interstate and everything was fine until about 50mph then it would not accelerate pass that and would shake violently. Did not throw a code so I have no idea what the problem could be the ficm reads between 47.5-48.5. By the way this is my first diesel so I'm tryin to learn my way around this beast. Any help would be great guys

[dowmace]

What oil is in the truck? I'm going to say you probably have a severely sticking injector but can't say for sure without more info

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[Sholmes1990]

15-40 rotella what other info do you need?

[Bluedemon6.0]

Any smoke out the exhaust?

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[Sholmes1990]

Well it smoke a little at start up but normal because it was 15 degrees this morning. Otherwise no

[Sholmes1990]

In case anyone was wondering all it was was the fuel filter needing to be changed and the diesel gelling a bit

[lrgnugs]

Going to try this out today same problem just had 4 injectors changed hopefully this goes away