Genuine Toyota Active Suspension Fluid for power steering contains additives, specially formulated to prevent fluid oxidation and engine wear in the most vulnerable areas, which influences the quality of the power steering operation and the overall performance of the braking system. Using non-original hydraulic fluid can lead to corrosion and shorten the system runtime. To improve the system efficiency and your peace of mind, use only Genuine Toyota fluids. Active Suspension Fluid (Japan) is a hydraulic fluid intended for use in the active suspension system of Toyota cars and in the central hydraulic system of Lexus RX cars. Made in Japan.