Pretty sure new Fords won’t have any rust issues considering their bodies are now aluminum.
Isn’t it just the box that’s aluminum? Are the fenders and rear exterior panels AL as well?
The 09-14 rot there when the 3rd brake light leaks and water runs down and gets trapped in the lower cab corners. The dealer will actually replace the 3rd brake and/or seal for free if it leaks. I actually took my 3rd brake light off and screwed a UHMW plate I made in it’s place and sealed with silicone (I have a topper).
That must explain all the rotted cab corners then. That must have been some leak, I’m going to start keeping track of trucks I see in parking lots that have rotted cab corners because it seems to be to be a very high percentage. I assume this is now fixed in newer models?
Grouse