It is likely too late to give you any advice on what to do for your DE, but I would run the car and add fluid after each session. If you are hearing noises the pump is likely already shot. Of course, if the amount of fluid loss is significant you should park the car and not put others at risk.

There are several places where the PS system fails and leaks.

The compression fittings on the high pressure line and both the rack and pump leak after repeated overheating. Failure of the front fitting is evident by PS fluid spinning into the left front wheel. Seal failure at the pump is harder to identify, but does produce some fluid leaking onto the under tray and then on to the ground.

The greatest concern is failure of the seal between the plastic reservoir behind the pump (not the expansion chamber where fluid is added) and the pump itself. This failure is a result of the plastic reservoir “melting” and the seal between it and the pump leaking. This failure can only be corrected by removing the pump and replacing the reservoir. When this seal fails the fluid pools on top of the engine. I have heard one report of the fluid catching on fire in a 987 Boxster S.

My car has failed at all three locations, so we undertook a likely overkill solution to the problem. We replaced the PS pump; removed the stock reservoir; installed a remote reservoir from the 993; installed a remote fluid cooler in the right side engine air inlet; and replaced the high pressure line with race car quality hose and fittings (required some machining). It is likely that if the car was healthy that only the remote cooler would be necessary.

Here is a link to the thread on the fix: Power Steering System Modification

Cheers,