Quote Originally Posted by ywang98 View Post
I am not saying that the DRC is a magnetic ride. The damping characteristics (auto, dynamic, etc.) is controlled by the wires that go into the front shocks. As far as I know, the oil has magnetic or some kind of ferrous particles that changes alignment from the control signals going into the shocks, thus creating different damping characteristics. This was how it was on my S4 (2018), and I think it's the same in the RS5.

The DRC is a cross-linked oil line system from shock to shock, and has pressure reservoirs at the rear bumper area covered by the rear bumper cover. This acts like a super sway bar.

I could be wrong. That was why I asked about the special oil, because regular hydraulic oil does not have that material that can be controlled by the shocks signals.
https://static.nhtsa.gov/odi/tsbs/20...38340-9999.pdf

See page 23. DRC is a mechanical system. The wires send control signals to the shocks to change the internal valves. You can't get DRC on an S4, and they are not the same either in purpose or in implementation.