I would be concerned with using HY-TRAN in transmissions built for SAE 90 gear oil, if operating in high draft situations. Rotary mower use, probably no concern, but I would still use the heavier product; John Deere's HY-GARD. In high draft applications I would do the opposite, fill both compartments with synthetic 75W90. The 75W90 will give the necesssary gear/bearing protection and be fluid enough to pump in low temperatures. Perhaps using a sulfur-less compound 75W90 GL3 could be a good idea rather than a GL5 which contains extreme pressure lubricants containing sulfur. However I have used GL5 gear lubes in older machines with plain bronze bearings and never have had any difficulties.
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Today's Featured Article - Experimental Tractors Article - by Danny Bowes (Dsl). Tractor technology appears to have nearly hit it's pinnacle of development. If you agreed with the subtitle, you are rather mistaken. Quite, actually. As a matter of fact, some of the technology experimented with over 40 years ago makes today's tractor technology seem absolutely stale by comparison. Experimentation, from the most complex assembly to the most simple and mundane component, is as an integral a part of any farm tractor's development
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