T4 is the newer replacement for rotella T... The "T4" blended oil product ( part syn and part reg oil) new name,,, and to helps it line up with the synthetic "T6" (fully synthetic) name.... But I suspect even the T6 is a blend of synthetic oils. T6 oils would be more important if you operate in extremely cold weather or outside "normal design" environments. I personally dont do snow removal, or plant/plow/hay below 32 degrees, so T4 is fine for my 32 to 120 degree days.
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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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