Originally Posted by barry123400

As soon as the engine stops when warmed up. Is the starter then able to crank the engine over well? I do not suspect the injection pump died because of the lack of internal lubrication. From what I understand and it is not certain. A pool of oil exists in the base of the injection pump rather than it fed like a crank bearing. That pool is refreshed with new oil but always has the pool present. You want an opinion on the possibility of the engine tightening up as it warms up.

My suspicion is it is inside the engine. At the same time I hope I am wrong. Those oil cooler hoses have been a curse for many over the years. There is no instant warning system like a bright light or warning buzzer on these diesels from the factory. I suspect most look at the oil pressure gauge after the problem is showing the results of inadaquate or no oil pressure.