Look in your manual for fluid specs. Some cars would call for PSF, others would call for ATF, and I don't remember what the Saturn S-series used.
It calls for power steering fluids meeting GM spec 9985010. I've been reading that TES-295-spec ATF is acceptable, but... am not quite sold on that idea yet.
How are you going about flushing the P/S fluid?
I'm looking at doing a return line method as well, but am still mulling it over and may choose to do something different at the last moment depending upon how it looks under the car.
For what it's worth, the '97 service manual states in the P/S unit removal instructions, one is to pump out the fluid from the reservoir, and DO
place a shop towel over the generator. Do not
allow power steering fluid to contact the generator.
As of last night, I have inherited my MIL 1995 SL2 with 75,600 miles on the odometer. I'm planning on servicing this vehicle from top to bottom. I normally do my P/S flush by loosing the return line method, but may be difficult to achieve with this SL2.
You're not alone with that! I'm doing everything for my 200k+ that sat for far too long and is soon going to have a rather extreme commute.
This thread has some good pointers and ideas on how to do it: http://www.saturnfans.com/forums/showthread.php?t=164871
Kinda mulling over returning the Valvoline P/S and switching over to Schaeffer ATF #204SAT due to it meeting TES-295, but can honestly not
recommend anything due to the lack of knowledge. If done, I'm going to purge it nearly entirely of P/S fluid. YMMV.