Can anyone confirm the lubrication for the actual PTO gearbox on the side of the standard TD42 box receives lubrication oil from the main gearbox as I cant recall seeing a fill point? There appears to be a little sump in the casing however I am thinking this may fill from carry over of the gears when they mesh with the main gearbox gogs. None of my manuals, Gregory, Haines or Nissan mentions this - or at least I cant find the reference. Thanks