Low ash oil for particulate emissions and two stroke Detroit diesels has fewer pressure point additives such as zinc. There is high pressure and shearing which occur typically between a cam lobe and flat tappet cam follower with a low rpm/light valve spring pressure engine. Now try a high rpm/high valve spring pressure flat tappet cammed engine without extra wear/pressure additives. Anybody ever wonder why Detroit diesel two strokes and Deere on the two cylinder injection pumps used roller cam followers? These high pressure additives lube oils when burned in leaky and worn engines. The residue is a hard metallic ash which fouls ports, sticks rings, sleeve ports and scores cylinder walls etc.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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