Stops squeals. Controls leakage. Protects year - around. Pennzoil Power Steering Fluid is formulated to meet or exceed the service requirements of all major automobile manufacturers for power steering fluid. Not all automobile manufacturers recommend power steering fluid, some require transmission or engine oils. Mixes with all power steering fluids. Stops power steering squeal. Controls leakage. Reduces wear and slippage. Prevents oxidation and corrosion. Inhibits foam and rust. Protects year - around. Made in the USA.