Does Electric Power Steering Require Oil?
3 Answers
There are two types of electric power steering systems. One is the pure electric power steering commonly used in Japanese cars, which is directly driven by an electric motor and does not require replacing power steering fluid. The other type, commonly used in European and American vehicles, employs an electric motor as the oil pump for the power steering system, with the hydraulic fluid from the pump driving the steering mechanism. This type of system uses power steering fluid, which should be replaced every 2 years or 30,000 kilometers to prevent contamination or deterioration. Characteristics of electric power steering: 1. It significantly improves both dynamic and static performance of the vehicle; 2. Reduces fuel consumption; 3. Enhances steering responsiveness; 4. Improves handling stability; 5. Enhances steering return characteristics; 6. Reduces environmental pollution, aligning with the trend of green technology; 7. Features a simple system structure and compact size.
As a seasoned driver with over a decade of experience, I initially drove vehicles with hydraulic power steering, which required regular oil level checks and fluid changes—otherwise, the steering would become heavy or even lead to oil leaks requiring repairs. But since switching to electric power steering (EPS), all these issues vanished. The EPS system relies entirely on an electric motor and sensors, directly sensing steering wheel movement and providing assistive force without any oil reservoirs, pumps, or hydraulic components. It operates more quietly and efficiently, eliminating failures caused by aging or leaking fluids. I’ve driven an EPS-equipped car for five years now—maintenance is effortless, with only occasional electrical system checks needed, saving both hassle and money. Most modern cars use EPS because it saves space, reduces weight, improves fuel efficiency, and delivers a smoother, more stable driving experience. If you’re curious, listen for the hum of a hydraulic pump when turning—EPS makes no sound at all. In short, EPS requires no oil and is a true blessing of technological progress.
As a daily commuter, I drive to and from work every day in an SUV with electric power steering (EPS) for two years now, never having to worry about power steering fluid. The EPS system is directly driven by a motor, eliminating the need for a hydraulic fluid system, making operation straightforward and effortless. Previously, driving an older car with hydraulic steering, the steering wheel would become stiff and hard to turn in cold winter weather as the fluid thickened, and in summer, I was always concerned about oil leaks. After switching to EPS, the steering has remained light and smooth, making parking especially convenient. This system is simple and durable, reducing maintenance burdens—I no longer have the expense of fluid changes or the environmental concerns of improper hydraulic fluid disposal. Driving on the highway, the system automatically adjusts the power assistance, ensuring safety and comfort. In short, the oil-free design of electric power steering makes driving more relaxed and efficient.
