Hydraulic oil
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=139977
Printed Date: 04 May 2025 at 9:25am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Hydraulic oil
Posted By: Dozer
Subject: Hydraulic oil
Date Posted: 01 Jul 2017 at 5:56am
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I noticed once again that the hydraulic oil in my HD6G has turned milky white indicating that it has accumulated moisture. Is there any way to remove the moisture and save the oil. I don't use the machine that often so replacing 15 gallons of hydraulic oil each spring is a problem.
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Replies:
Posted By: NEVER green
Date Posted: 01 Jul 2017 at 8:20am
Try one of those magnetic oil pan heaters to heat oil and a fan to circulate air above oil. Never tried it , often thought about it.
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2-8050 1-7080 6080 D-19 modelE & A 7040 R50
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Posted By: DMiller
Date Posted: 01 Jul 2017 at 8:55am
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Only other option is drain, filter for water and allow to settle then skim off good oil. Nothing I know of to remove water entrained in hydraulic oil.
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Posted By: steve(ill)
Date Posted: 01 Jul 2017 at 9:21am
new oils hold water in suspension... normally you can not filter it out... Only way is to heat the oil and get the water to vaporize and come out.. Don't need to boil, but needs to be plenty hot. Could try a pan heater, or drain oil, put in a 55 gallon drum over a wood fire and cook it.
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Like them all, but love the "B"s.
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Posted By: Coke-in-MN
Date Posted: 01 Jul 2017 at 10:59am
time might allow separation - or centrifuge - or the heating to a controlled temp to vaporize the oil water mixture to release the water .
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Posted By: DiyDave
Date Posted: 01 Jul 2017 at 7:03pm
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its tricky thing to do. water boils at 212ºF, but oil burns at about 250ºF...
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Posted By: pinball
Date Posted: 01 Jul 2017 at 10:49pm
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I'm not sure you have moisture but what I would do is if you haven't ran it for awhile then loosen up your drain plug just enough to get a drip out and if there is water it should drain out first. just my 3 cents worth
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Posted By: JW in MO
Date Posted: 02 Jul 2017 at 3:39pm
Have no problem with water settling out of motor oil but I drained some milky hydraulic oil out of a CA two years ago and put in milk jugs, the water is yet to separate and the jugs have not been moved. Next time I touch the jugs they will be making a trip to town.
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Maximum use of available resources!
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Posted By: SteveM C/IL
Date Posted: 02 Jul 2017 at 10:14pm
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Don't sound right that it just accumulates water setting around.Set out doors? leaky boot somewhere? Even with little use,might be cheaper to replace annually VS running as is....
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Posted By: Dozer
Date Posted: 04 Jul 2017 at 6:27am
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We have hot humid days and cold nights. Every morning any massive metal object is wet from condensation. Any unprotected steel rusts. This is especially true of my steering clutches.
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