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 - Buying your first tractor: Choosing the right one - by Chris Pratt. They cost less than the tax on a new tractor (at least where we live). They have the weight to do the job. They are simple and understandable. They even have a history and can be restored to become a major source of pride and enjoyment. But how do you know what to buy and how do you make the right purchase? There is a surprising number of machines available in every shape and size imaginable. Like most things in life, your needs have a lot to do with wh
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