I have been using diesel engines for a while and the only thing that I found that helps stop the "black cold" is a block heater. On the farm it made a huge difference (engines wouldn't start unless they were plugged in when it is cold). I had a Toyota diesel (2L) as well as a Mazda diesel (a pushrod Mitsubishi) before my Pajero and both of them started like a dream when plugged in. I want to get a block heater for my Pajero but just haven't got around to it yet. I would get the block heater ASAP you wont be disappointed. <img src="/forums/images/graemlins/cheers.gif" alt="" />