[Tornado_ALIVE]

I have an old Kirby Hobson power steering box mated up to an Astra power steering pump. I notice the box is meant to run automatic transmission fluid (ATF) whilst the pump is meant to use a synthetic power steering fluid.

What fluid are guys running? Can I run a DEX3 ATF or should I run synthetic?

I have heard if synthetic is used in the box, then seals can perish and fail.
I have also heard if you run ATF in an electric pump, it could fail.