I see no discrepancy, as soon as they developed the additive that would take the pressures of heavy loads on gears, it was 10 wt oil and additive. Then HY-Tran was developed and superceded the 10 wt with additive. They never go back and update original operator manuals so they will tell you what was recommended at the time the book was written. Gear lube was no longer to be used in tractors with a Torque Amplifier. This was all covered in service bulletins which are privy to dealers and they pass the information onto customers if deemed necessary.
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Today's Featured Article - Uncle Cecil's Super A Lives Again - by Mike Purcell. A week or so out of most of my childhood summers was often spent with my Uncle Cecil and Aunt Sissie in the small East Texas town of Maydelle on their 80 acre farm. Some of my fondest memories of these visits are those of learning to drive a tractor at the helm of Uncle Cecil’s 1948 Farmall Super A. Uncle Cecil was the second owner of this wonderful little tractor, but it was almost as though he had adopted an infant. The original owner was a man from Minnesota who bought her from a local dea
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