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I never noticed this with my 04 or 07 but it appears to be by design, so I will leave it this way, don't want to void my corrosion warranty! If you are going to seal it up better check with your dealer first. Sorry did not mean to open a can of worms!
there was a episode on truck about this same thing. its done to relieve standing water. you could do like i did and get some liquid weld and seal them up then get a spry on liner and never look back! thats what Stacie David did on gears.
That's my opinion also! Might void my factory corrosion warranty! If Ford designed it that way, I will not try and be smarter than the many engineers that designed it. So please don't take this the wrong way, but my holes stay open!
because I have a cap on my truck...these "drain" holes let alot of dust and road grime in the bed...after driving 200 miles in half snow half rain and then dirt road,the inside of the bed is a wreck not to mention my gearbags that were back there....
mine are getting the clear silicone treatment to all the "bad fitting " panels...I know a die maker at the truck plant... (you should hear the stories)
there should be some small "weep" holes not holes that cause your gear to get soaked and dirty..
I raised this issue 2 yrs ago on my 09 xlt. I have a black spray in & a topper so I sealed it.99% were not that open. Sloppy or by design I don't know but no Ford person had an answer.
I have a tonneau cover and spray-in bedliner in my '10. I also drive a lot of snowy/gravel/dusty roads and my cargo is *always* covered in dust/snow... arrgh! Thanks for the tip with the silicone! BTW, my '98 with slide-in bedliner didn't have this problem so I assume the slide-in just covered those drain holes...
My 09 had open seams front to back. Looked at 100 trucks of all makes & NONE had that. Not talking about the front or the rear joints for drainage. As has been said, lots of water in & hauling sand, dirt, grain would leave trails down the highway. Love to hear from an assembly plant engineer...
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.