Check owner's manual, look on P/S reservoir cap, or call a dealer.
Answer
Use Dextron III ATF fluid. should be clear red in color.
The BMW 318i has a tank inside the engine that houses the power steering fluid. This tank is near the oil cap.
It is important to maintain the levels of all of the fluids in a car. The steering fluid reservoir in the car is located under the hood, towards the back, it has a yellow cap stamped power steering.
You will find the power steering reservoir on a 2002 BMW 318i, under the BMW plastic cover over the radiator. It is a black and round, about the size of an orange.
The power steering pump is located on the front of the engine. The pump is on the lower part of the engine and will have a pulley on front and has a fill cap on top.
under the steering wheel
Before going to any great expense check the tension of the Pwr/Str pump drive belt & the fluid level of the Pwr/Str pump.
I BELEAVE THE BRAKE FLUID RESERVOIR AND CLUTCH FLUID RESERVOIR ARE ON IN THE SAME.
Under the steering wheel, you need to remove the panel under steering wheel.
It depends on what year model you're talking about, but from 2007 to current the 318i has had 141 bhp.
318 Auto transmission has a filler plug located on the side of the transmission.
The brake fluid and clutch reservoir are one and the same on the 1984 model.
Hey its really easy u just take that BMW cap off the middle of the steering wheel and there is a nut inside you just take that off and pull