I've been on a bit of a mission with my 200tdi to solve the awful whining noise that comes from beneath the centre seat. So far, I have drained the oil from the transfer case (happy to see there was some oil in there!) and taken off the plate on the side that seems to leak from every bolt! All looks ok, but I thought I would do the spline PTO test as there is a bit of a thud when I engage drive, see videos below. From what I've seen online this doesn't look so great
Welcome some opinions!
The noise is present at speeds of 25mph+ and is speed dependant. If I coast in neutral the noise is still there.