Gunk Universal Power Steering Fluid with Stop Leak is a non-corrosive top off fluid that works in all non synthetic power steering systems to keep power steering fluids at proper levels. Helps prevent leaks by protecting seals and hoses. Power Steering Fluid is formulated with detergent additives for a cleaner system and anti-foaming agents. Intermixes with factory fluids, making steering easier and smoother. Meets service requirements of GM, Ford and Chrysler.