At least for the 2005 model, the manual recommends using automatic Transmission Fluid to refill the Power Steering level in the car. Consult your manual to verify.
According to the 2003 Ford Focus Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used as the power steering fluid )
Mecron ATF is used for the Ford Focus.
regular plain power steering fluid that you can get from any parts store. The only vehicles that require a specific power steering fluid that I know of are Hondas.
The power steering fluid reservoir is by the firewall towards the passenger side of the engine
Power steering should never go down unless there is a leak found in the system. Therefore, you generally would not need to top up your brake fluid on a ford Focus.
The power steering reservoir can be located on the right-hand side of the engine, near the back. The cap will be labeled as power steering fluid only.
Not required
A good quality power steering fluid from any auto parts store will work. If you are not near a store with power steering fluid you can substitute a good tranmission fluid for Chrysler vehicles. BE CAREFUL AND CHECK THE YEAR , ACCORDING TO CHRYSLER'S 1985 MANUAL, NEVER , NEVER, NEVER USE TRANSMISSION FLUID IN THE POWER STEERING PUMP, POWER STEERING FLUID ONLY.
power steering fluid is fluid that makes the power steering pump work and it goes in the power steering pump under the hood.
The power steering fluid recommended is Mopar
When the power steering fluid is low, you may experience some, all, or none, of the following symptoms:squealing or buzzing sounds associated with steering action.sticking or 'jumpy' steering wheel.lack of steering power (more effort required to turn the steering wheel).
Remove the plug on the bottom of the power steering fluid pump. Drain the power steering fluid out. Replace the plug to the bottom of the power steering pump. Replace the power steering fluid.