Super S premium power steering fluid is a premium quality fluid carefully blended from synthetic base stocks and select additives for use in select General Motors, Ford, Chrysler and select import power steering systems. It protects against wear, oxidation and corrosion and can be used for complete fluid replacement or as a top off in passenger cars and light trucks. Super S premium power steering fluid helps maintain efficiency, performance and the condition of power steering units. Super S premium power steering fluid contains a unique friction modifier additive that has been shown to reduce power steering pump noise (squeal).