I was going to use 80w90 gear oil....but the owmer of our local napa store...said 80w90 has additives that could damage seals and metals in gearbox. I know the fluid was changed a long time ago (at least 15 years) and should be done again. This has been a very good tractor for us since new in 1966....6000 hrs,and never been apart..z145 engine,just keeps going.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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