Could someone let me know the type of power steering fluid I need for my 92 5ooE?
Thanks
Toby

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tobyd uk
94 E280T

This is the way to go:
http://63.89.49.212/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1FX0MB1RS1RA13EFN5&year=1992&make=MB&model=500-E-001&category=M&part=P%2FS+Fluid
Much cheaper than most dealers stock (note $8.xx/liter not/quart).
Some would say Dexron III will be fine and it may be, I had it in there for a year and saw no ill effects, others use it exclusivly. But, not worth the risk at the price. Transmission formula is changed over time and is not guaranteed to be compatible with the engineer's original specs.
Now someone can correct me.

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-Marty

1986 300E 220,000 miles+ transmission impossible
(Now waiting under a bridge in order to become one)

Reading your M103 duty cycle:
http://www.peachparts.com/shopforum/showpost.php?p=831799&postcount=13
http://www.peachparts.com/shopforum/showpost.php?p=831807&postcount=14

I vote for using simple power steering fluid like what Valvoline sells ($2/qt). I understand it's like transmission fluid, but without the additives.

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95 E320 Cabriolet, 159K

P/S fluids are basically the same a hydraulic fluids. Viscosity is similar to a 10W oil, but those with higher VI index are probably closer to a 10W-30. ATFs are in this same general range.

An important attribute of hydraulic oils is having some ZDDP anti-wear additive, but they don't need the friction modifier used to prevent clutch chatter in auto trans fluids.

Duke

Just go to your dealer and pick some up.

They like 500Es at dealers and will be nice to you if you're nice to them.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

They're really nice, to the tune of about $15 a quart. I did buy some.

Can't imagine why anyone would think some product at Pep Boys labeled "power steering fluid" has any relationship whatsoever to what Mercedes recommends.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

Originally Posted by Kestas
I vote for using simple power steering fluid like what Valvoline sells ($2/qt).

All power steering fluid is basically the same, except for the mineral oil stuff that goes into audi's that also powers the brake system

I rebuild steering components and i put valvoline p/s fluid into my 190 after i rebuilt that pump

Tom

In one of my 124s I use the stuff Marty indicated above. On the other 124 I used the Mercedes power steering fluid, but since that car calls for a different hydraulic fluid for the hydropnematic system I used the Mercedes hydraulic fluid. I don't know if it's necessary or not but out of an abundance of caution I thought it was a good idea.

lkchris, What's wrong with regular power steering fluid?

For coolant, MB requires MB coolant. But we know G-05 is the same and works well.
For brake fluid, MB requires MB brake fluid. But we know any DOT4 works well.
For bearing grease, MB requires MB bearing grease. But we know any hi-temp wheel bearing grease with EP additives works well.
For power steering fluid, MB requires MB power steering fluid. Can you tell us why regular ps fluid won't work?

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95 E320 Cabriolet, 159K