Can Power Steering Fluid and Transmission Fluid Be Used Interchangeably?
2 Answers
Power steering fluid and transmission fluid absolutely cannot be used interchangeably, as they are two different types of products with distinct properties. Here is an introduction to power steering fluid and transmission fluid: 1. The main function of transmission fluid is to keep the gear system clean, lubricate the transmission components, and extend their service life. Due to differences in transmission design, transmissions are divided into manual transmissions and automatic transmissions (which are further categorized into CVT, AMT, etc.). Each transmission design has different technical requirements. Even the same model of transmission configured in different vehicle models will differ in torque, weight, speed, structure, etc. Therefore, the original manufacturer specifies its own dedicated transmission fluid. 2. Power steering is a new technology in automobiles that enhances comfort by automatically providing steering force when the driver turns the wheel, thereby reducing the driver's steering effort. Power steering fluid is a medium oil added to the power steering system, serving to transmit steering force and provide cushioning.
When I first bought my car, a friend told me that power steering fluid and transmission fluid were pretty much the same. I believed it and ended up pouring some transmission fluid into the power steering reservoir. The steering immediately became stiff, and I nearly had an accident. Later, I spent over 500 yuan on repairs. The mechanic explained that power steering fluid is specifically designed to lubricate hydraulic systems, with lower viscosity, while transmission fluid is thicker and meant for gear shifting. Using the wrong type can cause pump wear, seal leaks, and other damage. Since then, I've made it a habit to always check the car manual before adding any fluids—it clearly lists the required specifications. Don't make the same mistake I did by cutting corners. Safe driving depends on meticulous maintenance. Regularly check fluid levels and never mix different types—saving a little money now might cost you big later.
