We have talked about it a bit over on the diesel forum, where there is a lot of info you should scan: http://www.bimmerfest.com/forums/forumdisplay.php?s=&daysprune=&f=154I am thinking of buying a used diesel. I am wondering how they run in the winter. I live in Ontario Canada and the winters can get well below 0 degrees. Do they start ok do they have a good heater etc. Any comments welcome