Decided to change the oil on my 102k 06 2.0TDI 6 speed box as the change wasn't the best especially when cold, looking through the forums the general opinion was to use the latest VW/Audi Gear Oil (G 052 171 A2), changed the oil (came out very dirty)and... change is worse! very notchy and a slight grind 1st to 2nd and up to 3rd which wasn't an issue before. Im changing the oil this coming weekend for Total 75 80 GL4 Mineral gear oil to see if it makes any difference as I know from experience that on worn syncros (Honda S2000 Box) the mineral gear oil allowed more bite and stopped a very slight 5th to 6th gear grind, will update when the change is done, can't be any worse!