What is the correct PS fluid?
 

Hey all,

Can somebody please let me know the proper power steering fluid for a 97 S600? I thinks I have seen 3 or 4 different types listed for this car, some synthetic some non-sysnthetic. Can I add synthetic if I have non-synthetic?

Thanks,

To be safe I'd just go to the dealer and get a bottle. The P/S reservoir only holds 1/4 quart or less, so cost isn't really a big part of it.

Have you flushed out the steering or replaced the filter lately? Always good to do that.

Answer
 

Here is a link to it.

Fastlane:
http://catalog.mercedesshop.com/item.wws?sku=W0133-1636443


The answer is NO, mixing will contaminate the system, and generally damages parts.

http://www.worldpac.com/tagged/Febi-PS-fluid-08972-000-989_88_03.pdf


Have a great day.

Thanks, didn't know power steering had a filter? What's the best way to flush it out? Thanks

power steering filter replace
http://www.peachparts.com/shopforum/diesel-discussion/134374-power-steering-filter-replace-post986942.html

Flush your power steering - baby its gross in there
http://www.peachparts.com/shopforum/diesel-discussion/136352-flush-your-power-steering-baby-its-gross-there.html#post1005518

Thanks whunter for your reply, very good info but I don't suppose this procedure applies to a 97 V12, right?

Answer
 

I assume you have an S600 (Coupe), chassis: W140.076, Years:1994-1997, Engine: M120

Answer:

No.
Yours has a screen/filter inside the power steering pump tank, and is not a regular maintenence item.

Filter, power steering
MB# 000 466 19 04
$110.00

tank seal ring
MB# 022 997 19 48
$1.40


NOTE – All prices on special order parts subject to change without notice.

Mine is sedan (140.057 I think) with M120. So I'm guessing I shouldn't worry about flushing/filter for PS. Thanks.