Would not use synthetic of any type in any engine, number of Duramax and Cummins drivers I know also feel that synthetic oil in their engines leads to higher consumption/leaks. Several went back to DelVac/Rotella and their problems cleared up. I've never used synthetic in any of mine, as I'm not a believer, running Rotella in Cummins since '04, now at 187k have had no problems, uses absolutely none, does get black quickly.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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