The only fluid used in your self-leveling system is MBZ "Hydraulic Fluid, ZH-M". I just flushed my 300TE and my 500E; it takes 2 litres to do the job right.

A point of confusion might be stemming from the fact that your car has a "tandem" type pump that supports both the rear suspension and the power steering. The power steering uses a different fluid.

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"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo