A 1991 VW Jetta's power steering reservoir is located towards the front of the engine bay. The unit can be seen placed on top of the power steering pump.
Power steering fluid or Automatic transmission fluid
It does not matter on that year, just make sure that it is POWER STEERING FLUID.
both power steering fluid and transmission fluid are hydraulic fluids, but it would be best to get some power steering fluid. its cheap and its the right stuff. 91 buicks take just plain Jane power steering fluid.
Regular power steering fluid, available at any part store and places like Walmart.
good idea
Ordinary auto transmission fluid (red)
The 240 Series Volvos use standard type power steering fluid. This type fluid is available at most any auto supply store.
No ( according to my Haynes Ford Explorer repair manual , 1991 to 1995 , type " F " automatic transmission fluid is used in the power steering )
According to my 1991 through 1995 Haynes Ford Explorer repair manual : ( type " F " automatic transmission fluid is used as the power steering fluid )
IT IS ATTACHED TO THE PUMP AT THE FRONT OF THE ENGINE
you could use a turkey baster