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.
Airaid CAI, Roush axle-backs, Roush high flow upper grill, Raxiom Smoked Projector HIDs