^ turns out my insurance won't cover animal activity... but after threatening to take my car back without fixing it there - I was going to bring it to an indy, the SA talked to their manager who agreed to do it under warranty. I took a look at the dmg and gas was squirting out of the line pretty good. Didn't seem like a chew mark, but a big pinhole. Not sure how it would otherwise be damaged by debris as it's protected by the underbody shield you have to unscrew. So faulty line or animal.

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'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr