This equipment facilitates the complete replacement of used transmission fluid with new fluid in vehicles equipped with automatic transmissions. The process typically involves connecting the device to the transmission lines, allowing it to pump out the old fluid while simultaneously introducing fresh fluid. This differs from a simple drain and refill, which only replaces a portion of the fluid. For instance, some units incorporate features like integrated heating systems to ensure optimal fluid viscosity during the exchange.
Regular fluid changes are essential for maintaining the health and longevity of automatic transmissions. These systems rely on hydraulic pressure for smooth shifting and power transfer, and degraded fluid can lead to slippage, overheating, and premature component failure. Historically, fluid changes were a messy and often incomplete process. The development of this specialized equipment provides a more efficient and thorough method, leading to improved transmission performance and extended service life.