6.7L Rightfront A/C Line
We have had 2 of our fleet trucks so far that have rubbed a hole through the AC lines.. its happening in the front right wheel well and its rubbing on the suspension upper control arm... turn your truck on and turn the wheel so you can get in there, gently pull back the wheel well cover and you will see it where the potential problem is and how bad its been rubbing!!
Hope this helps everyone since its almost summer time!!
Also that should be a Ford warranty part and possibly a future recall