Richard_999 , you need to educate yourself and not think all who go to the diesel sites are redneck tabaccy chewin idiots. You will find just as many here with useless info as you will on any specific brand site. You owe all a big apology for your self righteous bias.
The 6.0 is a good engine as long as you know what it requires and it is not some idiot who knows nothing cannot read the label on the engine covers and then tries to justify his own ignorance by claiming others are more so.
There was one guy who gave you some info, just dont follow all of it. Part of the problem was the use of the ford coolant. Just stick to the motorcraft filters, and use a good synthetic oil (rotella T6) and maybe some recommended additives and it should be fine. There are a lot of 6.0's out there towing and working everyday. some are abused some are treated with kid gloves, so you cannot tell what will happen. YES I have one and it is a good truck. I did spend the $4K for upgrades, but I also went with a ford tech who knows this truck and was highly recommended. I have the upgraded EGR cooler the new oil cooler, and he upgraded the truck to the latest specs. I also have coolant and oil by pass filters installed and have not found the 'sand' supposedly that is a cause. I did have the snot from the ford coolant thus I use catapiller ELC coolant. Add a scan gauge and some other gauges to monitor the engine and know what to look for. You will need to go the the ford diesel sites to 'educate' yourself as many here do not pass on the info related to these issues. So just because you are towing does not mean you do not tow. There are more towing than TT's, 5wheel. Farmers use trailers, and others use trailers, just not house trailers and they need to know what is appropriate and you are not really going to find the info here although some are knowledgeable.
Enjoy the truck or sell and get a chebby or a cummins and then you will still need to go to specific sites to get answers to which ever you have.