Just to give some context to latest pic posted. On left is older Royal Purple with silicone adbv, and right is older ACDelco ecore with nitrile adbv. Same as Fleetguard OF confirmed, ACDelco makes no pretense of claiming black adbv other than nitrile.
Also, neither filter pictured has same construction now. Recent pics show both RP and ACD use Champ Labs newest ecore construction with metal end caps.
Also, neither filter pictured has same construction now. Recent pics show both RP and ACD use Champ Labs newest ecore construction with metal end caps.