There's a lot of similarities but I would not bring over any fluid, seal or compound from the automotive world. These systems are very small and have tiny ports, small fluid volumes, etc.

In the past there have been issues with seals swelling, temp differentials causing the whole system to bind, etc.

I mean sure, hydraulics is hydraulics but the scale, parts, fluids and seals are all completely different.

Reminds me of the time back when I worked for Parker Hannifin and I assembled a pneumatic cylinder for NASA and missed the fact that the seals were special and put the regular grease on them. That one set us back.