Mercedes W126 self-levelling rear suspension flush

I’m about to take my 560SEC on a road trip. I’ve been making sure I had appropriate spares for this road trip, especially things that would he hard to get by the side of the road. One thing on my list was some spare ZH-M. ZH-M is the hydraulic fluid used in the self-levelling rear suspension. Since I was ordering ZH-M I got enough to flush the 300TE and 560SEC, as well a a new filter for the 300TE. The ZH-M was available from Sparesbox.

The fluid in the 560SEC looked fairly dark. I last flushed it in 2019. […]