the problem with the early 4.6L engines was that the oil pump relief valve bore was just the aluminum front cover and when too thick oil was used the valve would slam back and wear the bore , then the relief valve would stick and oil pressure would exceed 100 psi , making even Motorcraft filters swell . Ford started putting a hardened sleeve in the relief bore and the problem was for the most part history. I remember seeing that issue a few times.
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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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