How long can I expect a 2007 Ford F-250 superduty with a 6.0 diesel to last?

I'm looking at purchasing a 2007 Ford F-250 super duty with the 6.0 diesel in it. Current mileage is 154,000 and from what I can find on it has been serviced fairly well and was a texas truck. I only intend to use it to haul a 30' travel trailer a few times a year and maybe some local driving around town from time to time, but not really daily use. But my question is how reliable are they?

Ford 2003 F-250 Fluids

We got this truck 10 months ago, and I don't think anyone has done anything with the fluids since we got it,

I checked the fluids today after driving about 20 miles and back.

Trans fluid, and Oil dipsticks were completely covered, but the engine was hot so i didn't think much of it. But after 4 hours i checked again and it was the same thing.

Don't know much about engines but for the record, yes i did wipe the sticks first, and yes I was on flat terrain.

After 10 months Are they too full? Or could there be another problem?

What's a reasonable asking price low mileage 84 ford f250?

I previously asked this question with the wrong model… Have now adjusted for correct model and mileage is about 56k

What would be a reasonable asking price for a f250 1984 ford with low mileage one owner but not running. See explanation?
needs cleaned but its not in the worst condition it could be in. My honest assessment is it needs some cleanup but i would say on the mild side. Its not falling apart. Just don't know why it stopped running. The boyfriend took the battery out cause he needed it and when he put it back in it wouldn t start. Weve tried a brand new battery to no avail. But thats about it. Its red and was my late fathers.