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08-27-2022, 06:18 PM
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#1
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,083
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Hydraulic fluid
Pulled dip stick to check level in tank and it has a white milky look. Any thoughts what would cause this?
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08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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08-27-2022, 06:20 PM
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#2
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Senior Member
Join Date: Jul 2017
Posts: 1,284
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Water
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98 Monaco Windsor
2015 Rubicon Toad
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08-27-2022, 06:24 PM
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#3
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Community Administrator
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 17,207
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Hydraulic fluid or engine oil? If engine oil, you have water in it as previously said probably from a coolant leak.
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 2017 Phaeton 40IH XSH Maroon Coral - Power Glide Chassis with IFS
Previous '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
'16 Jeep JKU Wrangler Sahara or '08 Honda Goldwing
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08-27-2022, 06:26 PM
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#4
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Senior Member
Join Date: Jan 2021
Posts: 245
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Water
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2004 Winnebago Adventurer - W22
2013 Hyundai Elantra coupe - toad
2010 Ford Ranger - toad
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08-27-2022, 06:28 PM
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#5
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,083
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I did just remember that this coach uses 15x40 engine oil instead of AW 46 hydraulic oil like my last coach did.
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08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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08-27-2022, 08:55 PM
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#6
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Senior Member
Join Date: Jul 2017
Location: Box Elder, SD
Posts: 955
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A leaky seal on a hydraulic pump can draw air into the hydraulic oil and whip it up to a milky foam. After sitting for a while the air will evacuate and the oil will become clear again. My experience was with a faulty power steering pump. I simply replaced the shaft seal for the fix.
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2009 Country Coach Veranda 400, ISM 500, Aqua Hot 525D
2019 Lincoln Nautilus 2.7L Toad
2020 Lectric XP E-bike (Hybrid)
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08-28-2022, 10:27 AM
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#7
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Senior Member
Join Date: Jul 2017
Location: Box Elder, SD
Posts: 955
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I'll add that the bearing just behind the pump shaft seal is lubricated by hydraulic oil, of course, and this passageway is on the suction/intake side of the pump. That's why the seal can leak in air but oil doesn't spurt out.
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2009 Country Coach Veranda 400, ISM 500, Aqua Hot 525D
2019 Lincoln Nautilus 2.7L Toad
2020 Lectric XP E-bike (Hybrid)
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08-28-2022, 10:52 AM
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#8
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Senior Member
Join Date: Sep 2006
Location: Fulltime/ SE Minnesota
Posts: 3,083
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Thanks BonS, that sounds like a good place to start looking.
__________________
08 Foretravel Nimbus 40 ft tag axle / 1000 watts of solar
2019 Ram 1500 Big Horn Hemi 4x4
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08-28-2022, 02:33 PM
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#9
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Senior Member
Join Date: Aug 2001
Location: North America somewhere
Posts: 28,013
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I'd hope it's just aerated oil instead of water in oil. Draining, flushing with oil, then refilling with oil and getting all the air pockets out is a messy task.
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2000 Winnebago Ultimate Freedom USQ40JD , ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA. " My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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09-06-2022, 08:10 PM
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#10
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Senior Member
Monaco Owners Club
Join Date: Sep 2007
Location: Scottsdale, AZ
Posts: 2,306
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Sending an oil sample off to have it analyzed would be smart move in this case. That way you will know for sure, plus you’ll know what is in the oil, like any high levels of metal, etc.
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Harry
2008 Monaco Camelot 40' PDQ
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09-06-2022, 08:12 PM
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#11
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Senior Member
Monaco Owners Club
Join Date: Sep 2007
Location: Scottsdale, AZ
Posts: 2,306
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Jumped the gun on that one. Need to read more carefully. I see from the title it is the hydraulic fluid, and I was thinking engine oil.
My mistake. Sorry.
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Harry
2008 Monaco Camelot 40' PDQ
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09-16-2022, 09:19 AM
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#12
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Senior Member
Monaco Owners Club
Join Date: Oct 2009
Location: Tucson, AZ
Posts: 6,126
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Actually, I think Harry's right. We have hydraulic fluid analyzed in heavy equipment just like engine and transmission oil.
__________________
97 Monaco Windsor- Sold
07 Monaco Executive McKinley- Sold
04 Monaco Signature Chateau IV
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09-16-2022, 09:22 AM
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#13
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Senior Member
Join Date: Oct 2014
Posts: 6,557
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Quote:
Originally Posted by becks
Pulled dip stick to check level in tank and it has a white milky look. Any thoughts what would cause this?
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Getting it analyzed, IMO is a waste of money.
With the OP's description in the first post, drain, flush, new filters and fill.
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Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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