Is this normal?

My Transmission / Hydraulic oil has turned milky in about 4 years running time. The tractor only runs for short (30-45 min) periods of time to plow snow, haul wood. or do some grading. it is seldom left out in the rain and the shifter boot is good. Is it normal to turn milky, do to condensation in that time frame?
 
The milky condition is caused by moisture as You have figured. The moisture mostly comes from condensation
from cooling/heating of the tractor. The shifter boot isn't the most accessible area for direct entry of
water,but the draft spring more likely allows water to enter. I made a removable,plastic cover for mine and
have clear fluid,even though the tractor is mostly parked outside. You should change the fluid,dropping the
pump if possible. Running the tractor for a while with the transmission in neutral with the PTO engaged will
help to heat the system up.
 
(quoted from post at 11:55:34 11/21/21) My Transmission / Hydraulic oil has turned milky in about 4 years running time. The tractor only runs for short (30-45 min) periods of time to plow snow, haul wood. or do some grading. it is seldom left out in the rain and the shifter boot is good. Is it normal to turn milky, do to condensation in that time frame?

Four years is a long time so yes its "normal" for a tractor that sits in conditions conducive to the formation of condensation.

TOH
 


What do you have in it for oil? The oil that they used in them 20-70 years ago didn't absorb the moisture so you could just drain it off the bottom twice a year.
 

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