50k miles over 2 years is average mileage. You shouldn't be having any problems with anything just yet- as far as spark plugs and coil boots go. I would consider pulling the coils and boots off each plug and seeing if there is any oil in any of the wells. You might have a bad valve cover gasket that is causing some problems.
Although earlier fuel filters were required to be changed every 20-30k miles, I do believe that Ford switched to a "lifetime" filter in your vehicle. Hopefully someone with an 2010 will chime in to verify.
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Originally Posted by the user formerly known as ZX3_Chick
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