Ditto that. Similar filter/collection devices are a very common add-on in the Ford 7.3L diesel community. I'm not too worried, as my OEM CCV set up was replaced at 81k miles pre-purchase, but the G.A.S. kit sounds like it could be a winner.

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2006 X5 3.0 6-spd w/Evo UUC ssk
sport/premium pkgs
born Valentine's Day, 2006.