Thank you all for your responses, and restoring some faith back in to this site. lanmjdun, just for your info, I am an avid RR fan and have been the owner of such vehicles since 1990, my first being a 1986 3.5 Classic, I have also restored 2 classics, and currently run a 4.6 P38 which I als carry out almost all repairs on. My original post was purely to get some feedback from owners, as these are always the best sources for information. As stated before, if I wanted anonymous info I would trawl through google and see what came up, if we all did that, what would be the point of a forum? I for one enjoy reading what others post, I reply when I feel I can contribute something worthwhile, and I look forward to reading how things are going for other forum members. You couldnt get this from just any old site that Google picks out. As you are not running a TD6 yourself on a full time basis, the question wasnt aimed at you, read it by all means but dont belittle those who post questions, none of us on here know everything, we are all just trying to help each other get a better understanding of things. If a question to you seems daft, read it, laugh at it and then forget it, there is no benefit in putting negative comments just for the sake of it. As you can see, genuine people on the forum have been kind enough to give me their views which are greatly appreciated, and have allowed me to make an informed choice about whether upgrading to a TD6 is right for me.