Re: Water in hydraulic/transmission fluid

Posted by T_Bone on May 18, 2007 at 03:31:49 from (4.240.39.116):

In Reply to: Water in hydraulic/transmission fluid posted by Jrry on May 17, 2007 at 10:20:12:

Hi Jrry,

I cleaned up some hydraulic oil a couple years ago by just letting the oil sit in a covered container for about a year. The bottom gallon had water and trash in it but the top 4gal was very clean. I filtered the oil and reused it without any problems.

According to ASTM standards, clean #2 diesel has 500ppm of water content in suspension. You can not see the water in the oil but it's there. At 1000ppm then water falls out of suspension and that is the water you can drain off at the filter drain.

I've never ran into the info on water content of clean ASTM hydraulic oil but the above diesel example should be some what accurate in comparrision.

T_Bone

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