Ive had a 99 cherokee for a little over a year now but i just havent updated my profile on here. Ive been using Mobil Super HM 10w30 with a Wix filter but ive decided to give the Fram ultra a shot after reading great reviews on here. My only issue is ive heard alot of people say not to use any Fram filter on a 4.0 because it doesnt have an adbv. Is this true of all Fram filters? Does the Ultra have an adbv? My Jeep is a 99 cherokee with a new factory short block with 68k on the odo and a new clutch. No lifter tap and oil pressure stays around 50 psi hot idle. Its a really nice jeep and im trying take care of the engine so any feedback is appreciated.