Prestone AS145 Stop Leak Repair – 11 oz, 1 Pack

Description

Prestone AS145 Stop Leak Repair is an advanced formula designed to seal leaks in radiators, heater cores, and water pumps while preventing future damage. Its patented blend of natural and synthetic sealing particles—similar to those used in bulletproof materials—can seal leaks up to 0.020″ x 0.5″ without blocking coolant flow. It not only stops existing leaks but also treats the corrosive conditions that cause them by boosting corrosion inhibitors, extending the life of your cooling system.