Ford's have a silicone seal around the door. Regardless of how I pressure wash my truck, no water gets in there. I know because after each was, my drying includes, door jambs, under hood, tailgate jam and fuel door, inside and out. I think your good.I have seen the inside of every fuel door on every vehicle I have ever owned filled with snow and or dust. I do not want that **** in my fuel tank. And no, a little flap in the filler is not going to stop it.
I will happily deal with twisting a cap on and off to prevent water and rock grit from getting into my fuel system.
This is a system designed to appease people who won't go off road on an ostensibly off-road vehicle.
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