You mentioned Deere, their break-in oil, along with your Dodge-Cummins truck.
Deere sells special "break-in" oil to promote wear on rings and cylinder walls to establish a wear pattern. Deere and other companies had many headaches with HD engines that had rings walk around the pistons and the gaps got lined up.
Other companies sell special "break-in" oil that does just the opposite and has extra ZDDP added.
When I worked as a Deere mechanic, we used high-degergent TorqGuard 10W oil for break-in as recommended by Deere Co. That until their newer TY22057 oil came out. Deere never told us to use a non-detergent oil for break-in. But, I have no idea of the specs on the newer oil. It may well be the old TorqueGuard 10W high-degergent with a new part #.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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