Here is the deal. Trying to help a friend. Part of the problem is he had a oil change done and the put in 10w40 motor oil. Big OOPS! Any way. He had injectors done a year ago. glowplugs last fall. Now it starts cold and runs. runs OK. then when you shut it down it will not start warm. I am guessing i am needing to head into the ICP, IPR, Poss. high press.oil pump. I am asking here on some ideas to save some time in my shop manuals. Any good ideas I am ready to hear about. I have him also talked into a EGR delete. But fix the other first. Now the wrong oil is not a good thing. Leaves a small puddle on cool down. So now to track that. Any info is a plus. Thanks!