Turbo diesels of many different persuasions-Nissan, Toyota, Mitsubishi, Holden(Isuzu)- are very common here in Oz and I can't say that I've seen a lot of them overheat while working hard. <BR>They are generally very stable in the engine temperature department. Most of my experience has been in tropical areas so it is quite hot and humid which does nothing for cooling assistance. One thing I have noticed is when the ambient air temperature drops they go better and better, something to do with cold dense air.<BR>Just thought I'd add my 2 bobs worth.<P>Take care out there,<BR>CraigB [img]images/icons/smile.gif" border="0[/img]