since no one answered this: The coolant temp depends on usage at the time and the opening temp of the stat which is usually stamped on the pellet. Coolant will run up to 20 degrees over this number under varying loads up to that max at max load. The engine will tolerate much higher, but the coolant can boil out and the radiator cap needs to be a pressure type; 6 psig as I recall.
Stats usually are stamped from 160 to 180F. I have a 2000D and I never investigated why, but it likes the 160 over the 180 stat. Normal thinking is that the diesel would prefer the higher temp for better combustion and fuel atomization.
Coolant level in the radiator should be roughly 1" above the core. The space at the top of the tank is for expansion and if you fill it with fluid (which is the normal inclination) it will just boil out (be forced out the vent tube) as the fluid gets hot and expands. The tank doesn't do the cooling, air over the core does.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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