1998 5 door teranno 2.7tdi manual can anyone tell me what is the correct oil for the gearbox and transfer box,the nissan hand book says API GL4 75-90 for the gearbox and the same for transfer box,my local auto suppliers agree for the gearbox but say the transfer box should have AQM oil in it.the miller oil web site says millermatic ATM fluid so any help would be appreciated.