I did a stupid thing. I drove around for a few hundred miles before the power steering failed. Only then did I realize my mistake.
I can get the bad fluid out and put in new, but I’m wondering why the power steering was working on the incorrect fluid and then suddenly stopped working — no more power assistance. Have I destroyed something expensive? There’s no puddle of fluid on my driveway.
I will investigate later, but in the meantime I wonder if you could tell me: how likely is it that I have broken something expensive vs. simply needing to replace the correct fluid?