Recently noticed the short Nissan OEM filter 15208-65f0C has been updated to 15208-65f0E. I bought a couple and noticed these new filters have a silicone ADBV and feel heavier then their predecessor. I would venture to say they probably have metal end caps like their bigger brother does too. It appears they are now made in Mexico like the longer Nissan OE filter is. I just wish I knew what the efficiency/micron rating is for these filters. Anyone have any thoughts about this updated filter or know what the efficiency/micron rating is for these filters?