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 - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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