if its the cpp power steering.
I have had issues with the fittings starting to leak on the powersteering box itself.
Because of its location to the engine even with a heat shield I think the heating hot and cooling loosens the adapters and fitting.
I have to tight them at least once a year. I can always tell because the fluid starts getting low.
I don't think I have ever had to top off the others i drive but at least once or twice in 10 years.

So check for a small leak.
I do the paper towel test around the fittings.
Drive for a while then see which one has fluid.
zipties / tape keep them in place.