In Reply to: Hydraulic Fluid - Dexron III equivalent posted by Paladin (Bob In PA) on January 03, 2011 at 14:09:19:
I have found that all the Tractor Hydraulid Fluid that I have used recently is approved for Dexron III applicatons. If you are using THF instead of 90wt you should have some laying around.
AW 32 is not as "robust" as Dexron or THF. AW46 is closer to the spec. that you quoted. 10W engine oil (or Turbine Oil, if you want to eliminate the additives needed for the internal combustion engine applicaton) is a basic mineral oil, and is closer to AW46 in viscosity than AW32.
In such an undemanding application, anything mentioned above should work fine.
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