Power Steering Fluid. Guards power steering components against pump breakdown due to premature wear, oxidation and foaming. Prestone Power Steering Fluid is number one in the United States and is formulated for use in GM, Ford, Chrysler, and most foreign cars and light trucks. It protects against pump breakdown caused by wear, oxidation and foaming. Use this to lessen pump squealing and aid in smooth power steering operation. Formulated to use in GM, Chrysler, and most foreign cars and light trucks. Formulated to help protect modern power steering systems against pump breakdown caused by wear, oxidation and foaming. Pours at sub-zero temperature to help assure cold weather steering performance. How To Use: With engine off, wipe power steering reservoir filled cap area clean and remove cap. Fill reservoir with Prestone® Power Steering Fluid until specified level. Do not overfill, check regularly and refill as needed. After using product, always wash exposed skin thoroughly with soap and water.