Originally Posted by madpogue

^^^ Correct.

Originally Posted by RÖENTGEEP

X2

Originally Posted by Chris56ford

What madpogue said^^.

Also definitely check the entire glow plugs system out and make sure everything works. Its harder to notice a couple bad glow plugs in 20F-up weather but in sub-zero temps it will make all the difference in starting. The winters where I live are frequently 0F to -30F.

5W-40 Synthetic oils really help. Start it and let it warm up for at LEAST 15 min in cold temps then take it easy till it starts warming up. If you take off and start creating a lot of boost when the oil is super cold you can smoke your turbo from oil starvation.

I don't know where in Oregon you are but if they don't offer a blended diesel in the winter make sure you put in plenty of anti-gel and fill up with a blended diesel as soon as possible and keep using the recommended dose of anti-gel. Keep a few spare fuel filters. If the diesel gels up it clogs the fuel filter with wax. You can swap in a new filter and it can get you a little further down the road while the other warms up in the cab. You can swap them out as the other gets clogged. Sometimes it helps to keep a good sealed can of diesel in the cab that's kept warm and it can be added to the tank and fuel bowl if it gels up.

I haven't had much luck with the front grill covers. There is too much space between the grill and radiator and lets the same amount of air flow in at idle. I use a piece of cardboard I spray paint black that covers about 2/3 of the radiator. The AC condenser keeps it from going anywhere. I have towed heavy loads in the winter this way and it doesn't get hot but it sure warms up faster at idle.

Lots of info there, but I've been stranded a couple times and a few of these things had to be learned the hard way.