I have a 2010 super crew that I bought new in Feb. I noticed oil in the driveway last week so I took it to the dealer. They had to replace the entire rack & pinion system that was leaking. The Dealer told me that mine was the 8th 2010 F150 she had seen in the last 3 months for the same problem. The Dealer said this may end up as a recall.
I did not do a search on this site for this problem so I am sorry if this is old info for you folks.