I faced a similar problem long time ago in another country where I had to repair a high pressure hose for Power steering, the new one was steel braided and was very loud, The original hose was fibre braided.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)