Can power steering fluids of different brands be mixed?
2 Answers
Power steering fluids of different brands can be mixed in emergency situations, but it is not recommended under normal circumstances. Power Steering Fluid: Power steering fluid is a special liquid used in the power steering pump of a car. Through hydraulic action, it can make the steering wheel very light, similar to automatic transmission fluid, brake fluid, and shock absorber fluid. Precautions for replacing power steering fluid: Power steering fluid contains carcinogenic substances. If it comes into contact with the skin, it should be washed off promptly; power steering fluid is corrosive and may cause paint to lose its luster and rubber parts to age. If contaminated, it should be cleaned immediately; for cars equipped with hydraulic power steering systems, avoid turning the steering wheel to the limit during use, as prolonged operation in this manner can burn out the power steering pump.
Speaking of mixing power steering fluids, I once experienced a sudden heavy steering in my car. Upon inspection, it was found that two different brands of fluid had been mixed together. The mechanic explained that different formulations and additives can react with each other, causing sediment that clogs the lines and nearly ruined the pump. Since then, I've stuck to using only the same brand or completely flushing the system before adding new fluid to avoid costly repairs later. It's also important to regularly check the fluid reservoir level and top it up with the same product when low—never mix different types for convenience, as it can lead to unstable hydraulic pressure and difficult steering, especially noticeable when parking, which compromises handling safety. It's recommended to change the fluid every two years to ensure the system runs smoothly for the long haul.
