Someone asked about how cold blooded the PSD's were. I have had one for almost a year now and live in chilly Michigan. I have never plugged in the block heaters, and I just let it idle for about 10 minutes before I take off. It does growl at me for the abuse, but warms up just about the same as my 5.0 did. It is a crew cab and it will drive you out if you don't turn the heat down. Love it. I have the oil checked regularly and they say it is wearing VERY slowly and should last for years. I use Blackstone Labs in Indiana and it only costs 16 bucks for a complete oil analysis. Drive safe...
RA