Thanks Umai you are spot on as usual , seems that VW did not bother to do any sort of checking on Australian climate and driving conditions before unleashing their technology on us to test in the real world . If our T5 Tipronic had been serviced at 60000 when I asked the local dealer because of an issue with it , I would not have had to spend $8500 later to have it rebuilt just because VW had an internal filter which became blocked with decayed fluid and clutch particles .