My 01 S60 has been leaking PS fluid. Looks like it is at the hose clamp underneath the reservoir. I am thinking replacing the clamp might fix the problem. Anyone know if there is an aftermarket clamp that work better than the volvo one which tends to leak over time. what size is the clamp?

By the way, I notice the PS fluid reservoir cap can never be tighten completely, if I turn it all the way, it will just break loose again after some initial tightening and I wonder if this is by design? Or I have a defective cap?

 

The seal on the cap might be bad.

Just get a normal heater hose clamp.