I have a 12 and it has been perfect but there are lots of known issues with the 11's. If the price is right and updates were done, as well as regular maintenance it is likely ok. The newer you buy of this engine the better though.
There are lots of Superduty forums on and off facebook, google search will show them. They are valuable resources.
Here is a beauty of a '13 low mileage, great price on the forum
http://www.outdoorsmenforum.ca/showthread.php?t=339954
I would not even think of selling my '12 for that low.
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Only dead fish go with the flow. The rest use their brains in life.
Originally Posted by Twisted Canuck
I wasn't thinking far enough ahead for an outcome, I was ranting. By definition, a rant doesn't imply much forethought.....