Lucas Oil Power Steering Stop Leak restores elastomeric seals in power steering systems to seal and stop leaks. Our formula contains no solvents, and helps to clean and reduce friction in hydraulicly actuated power steering systems to ensure smooth steering and responsiveness. Lucas Oil Power Steering Stop Leak is compatible with all power steering fluids and will not void warranties when used as directed. If the system is leaking, add Lucas Oil Power Steering Stop Leak until leak stops, usually one bottle. To eliminate squeals, whines, and hard spots (morning sickness) some of the existing fluid must be removed from fluid reservoir usually 6 to 12 ounces depending on severity of problem. Refill reservoir with Lucas Oil Power Steering Stop Leak. Results are frequently immediate and long lasting. Lucas Power Steering Stop Leak is guaranteed to stop seal leaks or your money back.