Vehicles need power steering and transmission fluid in order to perform at their best, but what's the difference between them ...

fewer and fewer cars have power-steering fluid anymore. (Only the hydraulic systems use power-steering fluid.) But if your car is one that still has hydraulic power steering, your owner’s manual ...

The power-steering pump pressurizes the hydraulic fluid that helps the driver turn the steering wheel. Signs of steering-pump failure include leaks, noises or decreased assistance while steering.