Mineral Oil as Hyd Fluid

[Steve Sherman]

As a tangent to my other post about my hyd fluid leak, I am curious to
get the lit's opinion on the emergency use of mineral oil (the type you
buy in the drug store) as a substitute for the proper stuff.  I did not
need it, but did pick up a bottle at a drug store in case the fluid loss
became severe and I needed it to get home.

What's the deal with the drug store mineral oil?  Is it safe to put it
into the hyd system?  Will it eat up seals, ruin the other fluid, etc?

Be good to know if this stuff can be used in emergencies...

TIA