The O'Reilly's near me just started to stock the new Wix-made Microguard filters so I decided to buy one of what they had on hand, MGL51522, and sacrifice it for all of us to see. They were just beginning the switch over to Wix part numbers so there were a very limited number for new-stock filters on hand so I cannot speak for the entire Microguard line but I think it is safe to say that all of them will be constructed with a nitrile ADBV. Most of the stock on hand just had a sticker with a WIX number over top of the original tag on the box. Still, I see this as a major improvement over the previous models which probably opens up more O'Reilly oil change specials as a possibilty to those of us who fear the OCOD and it's derivatives. Enjoy the pictures!