John Deere shows temperature ranges for regular (J20C) and Low Viscosity J20D) Hy-Gard. Since this Mobil fluid says it meets J20C spec, it would apply to the same ranges as the regular Hy-Gard. The Operator's Manual for some JD tractors (4600 may be one) recommends the low viscosity, J20D, before the regular J20C. One should check the operator's manuals for recommendations then match specs.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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