Prestone Power Steering Fluid with Stop Leak serves as an excellent preventative maintenance product to help avoid future leaks. Formulated with high-quality oil and fortified with additives to revitalize dried, shrunken, and hardened seals, this power steering fluid helps stop or reduce fluid loss caused by leaky seals. Compatible with factory fluids, it meets service requirements of GM, Ford, Chrysler and many global manufacturers. This formula contains several key ingredients to ensure smooth system operation: anti-wear agents to protect pump components; antioxidants to prevent sludge formation; seal swell agent to protect and rejuvenate seals; antifoam agents to prevent pump cavitation and steering loss; corrosion inhibitors to protect metal components; and pour point depressants for good steering even in low temperatures. Keeps power-steering systems running smoothly, and mixes with all approved power-steering fluids.