Each and every product of Hi-Gear is engineered to meet or surpass the strictest of industry standard specifications. Hi-Gear maintains its own research and development facility and formulations are constantly under review to ensure the latest technologies are implemented. Hi-Gear Power Steering Conditioner and Stop Leak is an effective preventative to stop leaks and maintain the power steering system. Use for a smooth running power steering unit in your vehicle. One bottle treats 2.5 quarts.