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#2674307 - 07/05/12 07:36 AM Mersedes hyroscopic fluid
MBS500 Offline


Registered: 06/22/12
Posts: 665
Loc: Crestwood,KY
Hi guys. While changing out powesteering fluid and diff oil this morning, I noticed 1 more fluid tank. It says zh-m hydrolic fluid on it. I searched mbforums and it is fluid for self leveling suspension. My qestion is, should I suck it out with oil extractor and put new in(lets say next 3 oil changes), or should I better go and let the shop fully drain and replace? Also does anyone know what cost of that fluid at stealer? Parts geek has it for around $18 per liter delivered
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#2674332 - 07/05/12 08:08 AM Re: Mersedes hyroscopic fluid [Re: MBS500]
scurvy Offline


Registered: 02/19/07
Posts: 2271
Loc: Chicago IL USA
I do a suction & fill of my cars' power steering fluid reservoir about every other oil change - my Volkswagens take Pentosin CHF11S. This method keeps the fluid freshened up without having to completely open up the system.
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You are entitled to your own opinion but not your own facts.

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#2674429 - 07/05/12 09:51 AM Re: Mersedes hyroscopic fluid [Re: MBS500]
Y_K Offline


Registered: 05/29/09
Posts: 1002
Loc: WA (USA)
That fluid circulates well, so you can do turkey baster method. The only caveat: get a new and clean one and keep it separate from other ones - a contact with regular PS fluid may be detrimental to the system.
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#2674473 - 07/05/12 10:28 AM Re: Mersedes hyroscopic fluid [Re: scurvy]
MBS500 Offline


Registered: 06/22/12
Posts: 665
Loc: Crestwood,KY
Originally Posted By: scurvy
I do a suction & fill of my cars' power steering fluid reservoir about every other oil change - my Volkswagens take Pentosin CHF11S. This method keeps the fluid freshened up without having to completely open up the system.
For power steering I used Swepco 715. It is cheaper alternative of CHF11s and widely used by Porsche enthusiasts, as I know.
What I was asking above is completely separate fluid and system, for self leveling suspension.
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13 Fiat 500Turbo:9k,M1 0w40/Mopar filter+Ceratec
06 BMW 550i:81k,Mag1 5w40/Champ filter+MoS2
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#2675527 - 07/06/12 09:01 AM Re: Mersedes hyroscopic fluid [Re: MBS500]
scurvy Offline


Registered: 02/19/07
Posts: 2271
Loc: Chicago IL USA
Originally Posted By: MBS500
What I was asking above is completely separate fluid and system, for self leveling suspension.

Right, but the function of the systems is the same. I wasn't suggesting you use CHF11S in that application.

In my experience, suction & refill of this type of system is a great way to keep the fluid freshened up without necessitating a full drain & fill.
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You are entitled to your own opinion but not your own facts.

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#2694249 - 07/24/12 07:27 PM Re: Mersedes hyroscopic fluid [Re: MBS500]
widman Offline


Registered: 05/27/02
Posts: 3060
Loc: Bolivia
If you are talking one of these MB fluids
MB 345.0
Mercedes-Benz 001 989 24 03 10
Mercedes-Benz 001 989 24 03 12
Mercedes-Benz Q 1 32 0001

Then you go for the pentosin chf11s or equivalent (full synthetic). it is a very high VI low viscosity fluid, green in color. The local MB dealer buys my version of this fluid.

The swepco product is not synthetic
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#3444524 - 08/03/14 08:47 AM Re: Mersedes hyroscopic fluid [Re: MBS500]
joegreen Offline


Registered: 03/10/13
Posts: 112
Loc: NY
Whatever you do make sure you keep the system clean. Old and dirty oil is the downfall of the sls system.
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