Saw them at Walmart this evening. Never knew they existed. But then maybe I'm just late for the party. Seems they were introduced in June of 2015. Here's some Bing info if anyone's interested:

http://www.bobistheoilguy.com/forums...pics/3766224/1

http://www.bobistheoilguy.com/forums...12#Post3769712

I saw them a couple months ago but since most XJ's aren't diesel I did not see one that fit local to me.

Ok I see now they offer 6 for specific diesel vehicles only.