I just talked to a guy in the parts dept at the dealer where I purchased the car. He had never heard of XL-18. I'm really not sure if I need to just buy some of this stuff from Ford or go through the dealer. I did get him to verify the TSB on the lower control arms, so I've got an appointment next week to get them looked at.
Glad to learn you’re bringing it in to have it looked at, johnrhance. Your service manager is in the best position to let you know if there is work needed, and about coverage you may have for it (warranty, recall, etc.). Let me know the outcome.