Power Steering Fluid--Need to Be Replaced?

[shertex]

I've got a power steering fluid leak which I need to get fixed...looks like both ends of the hose coming out of the reservoir.

While I'm at it....is there a need to replace the fluid and filter? The MB manual gives no guidance on the matter. The PO replaced the pump at 95,000 miles; it now has 186,000. I just hate to go to the unnecessary expense of replacing the fluid if a new pump is in my future anyway.

In general, what are people's thoughts about intervals? I've heard fluid every 15k, filter every 60k (so says the E Class Owner's Bible). But who knows?

Also, is any "over the counter" power steering fluid fine, or do I need to use MB stuff?

Thanks.