Ford may be in some hot water over fuel tank lining issues, with a suit being filed against them earlier this week. According to the plaintiffs, E and F-Series model trucks from 1999 to 2008 may suffer from flaking fuel tank lining. Of course, having stuff floating around in your fuel is definite no-no. Flakes and dirty gas can easily clog fuel lines, leading to power loss and stalling.
Interestingly, the complaint says that dealers were issued a service bulletin from Ford alerting them to the issue, but never offered free repair and never issued a recall. Considering the staggering sales numbers of the F-series of trucks, it wouldn't be surprising if a defect managed to affect the "thousands" the complaint claims it does.