Hello. A question if I may. I have a 06 nissan xterra. 19000 mi. it was a leased vehicle so I'm going to assume the trans fluid hasnt been changed. after finding what little info I could On this MATIC J stuff I call my local dealer and he tells me nissan superceded the J with the new MATIC S which of course he knows nothing about. doesnt know the difference between the two, Doesnt know if the new "S" is a full sythetic or not ( which I doubt if the stealer is selling it for $11.00/ QT.) Just trying to figure out if I can do a pan drop and fill, or, if I"m adding SUper secret new improved MATIC S to the old and not new and improved anymore MAtic J , If I need to do A cooler line flush to remove all of the Old MAtic J. I have used amsoil products in the past with good luck and have thought about running around the end of all this MATIC/ SMATIC Marketing mumbo jumbo but with 40,000 miles left on a factory warranty I,m gonna just have to ask for your opinions on the matic. Thanks in advance, mIke