Funny you should mention this. Time for a confession.
Gotta tell it like it is and eat a little crow.

I was leaking from that hose this winter every time
the temp went to 20 Deg and didn't know it.
I thought it was my engine seals and started
blaming my Mobil1. Spoting on driveway looked just like
new motor oil. I lucked out when I was lurking under
my hood and noticed the steering pump had fluid biuld up near the
reservoir hose you specify.

Solution : Got a srewdriver and turned the O-clamp a few times
and I have not had a drip since.

So hopefully all you have is a loose O-clamp at that connection
which needs tightening.

Hope this helps and sorry for upsetting the synthetic oil crew needlessly.

rd 99' c70 cpe