Oil cooler leaking while running would put oil in the water. If it happened to leak setting then could let water in the oil. To test one just block off the ports and add air to the one side in a pan of water if it doesn't show a leak start adding heat to the water container till it reaches operating temperature. It will start to bubble with about the same pressure as the oil pressure in the engine or up to about a 100 PSI. Yes 100 PSI. I had one on a Cat go bad took about 100 PSI to make it leak with some heat. The oil pressure runs at about 80 PSI driving down the road and idles with about 75 PSI.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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