Just bought this car, i have to go get it yet. ...had the problem when i bought it. When looking in over and under this car i could only figure that it must be on the back lower passenger side of the engine. The power steering was working fine when running and driving but telling me to service the power steering. I wondered if it was electric . Put it in the key in the run position engine off and i could not turn the wheel. Started motor and it turned nicely, so i assume it is a hydraulic system and in need of fluid. What Fluid to use?