Read the owners manual. It has that information.
You could get an oil change as soon as possible to flush the system.
To change the Ford Escape power steering fluid, drain any fluid from the reservoir by pulling out the stopper. One can flush the old fluid out of the system. Replace the stopper and add the amount of fluid recommended by the owners' manual.
Flush it
you don't volvo 850 transaxles do not have a filter for the transmissions they are AW50-42le trans axles the best you can do is a fluid flush
The transmission on the s60 has no serviceable filter. What is recommended is to flush the transmission fluid using a good grade synthetic fluid such as Castrol Syngard.
easiest way is a powersteering flush service. many auto shops do this.
You will screw your steering system. You need to flush steering system ASAP. And of course do not drive with engine oil in steering.
You need to flush the power steering fluid on a 2003 Toyota Highlander every two to three years. You should check the fluid levels weekly.
I paid $ 129.99 at the GM dealership for power steering flush & fill with synthetic fluid.
Water in fluid as a result of leak or condensation. Time to flush and refill with new.
It takes special eqipment to flush the PS fluid. Get a turkey baster and suck all the fluid out of the PS reservoir and refill it. Do this several times and you will have effectively changed the fluid.
On a 21 year old car I would not do a flush. You may stir up trouble, so just do a fluid change.