2002 CL55 AMG, with M113... vehicle is equipped with ABC; as such the vehicle utilizes a tandem hydraulic fluid pump, which supplies pressurized fluids for the ABC and power steering systems. The vehicle is equipped with a single piece molded plastic hydraulic fluid reservoir, with one chamber supplying the ABC system and the other chamber supplying the PS system. There is no communication between the two chambers. Each circuit is equipped with a filter element. The ABC side uses the appropriate hydraulic fluid (M-B # Q 1 32 0001); what is the proper fluid for the power steering section?

The local M-B dealer states that ABC fluid is used in both chambers of these fluid reservoirs. Yet inspection of the reservoirs' current contents reveals a green fluid in the ABC section and a straw colored fluid in the power steering section.

Is the dealer correct? Does the power steering system require the same fluid as the ABC system?

Thanks.

Yes, both systems utilize the CHF11s fluid (Q 1 32 0001).

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1985 300TD - "Panzer Wagen" - undergoing full restoration (resto - mod)
2014 GLK250 Bluetec - Wife's car

Mercedes-Benz Master Certified Technician.

http://www.flickr.com/photos/joshuajeeper/

Yeah they say pentosin on both sides, but most I've seen have regular ole power steering fluid in the power steering side, which I personally prefer. Pentosin has some very aggressive detergents that I feel may do more harm than good in the steering system, especially if the seals have already been conditioned with the other stuff.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
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PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff