It wasn't that the GL1 oil would protect the bronze bearings and bushes. GL 1 oil was used as a compromise between a gear oil and a hydraulic oil in this system. Hydraulic oil would be too thin to lube the transmission properley and Gear oil was too thick for the hydraulics, the aditional problem with gear oil is that it contains sulpher and that is the component in the oil that damages the bronze bearings and bushes and should never be used. But there is a lot of confusion between GL1 80W or 90W and SAE 80W or 90W and the oils do get confused and the wrong oils are used in error. SAE80 or 90 is quite thick because it is a gear oil,but GL1 90W oil is the equivalent of about SAE40 which is what you could use as engine oil. So you see that is where the bit about the damage to bronze bearings comes from. In fact the Multi-grades will give better protection to the bronze parts because of the additives used. There are a lot of users now changed over to Multi-grade in the Hydraulics and no-one to-date has had a complaint.....John
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Today's Featured Article - The Day Mom Drove the 8N - by Brian Browning. My Dad was wanting to put in a garden but couldn't operate the 8N and handle the old horse drawn plow he had found and rigged up to use with the tractor. Well, he decided to go get Mom out of the house and have her drive the tractor while he walked behind the plow. You got to understand that while my Mom is a hard worker who will always help whenever she can... she had never operated farm machinery before that day. Dad got her out there, explained how the clutch was the same as in our o
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