This will expand the seals and keep them soft and pliable. The result is that many leaks will quickly disappear. Avoid products containing harmful aromatic solvents. Cooling system leaks occur when corrosion eats away tiny holes in radiators and heater cores. Better cooling system leak stoppers contain helical micro fibers that fill those holes, but will not harm or clog the system.
Inferior products contain metal flakes and solids that can damage a cooling system.
While leak stoppers do stop many leaks, sometimes seal deterioration or corrosion is so advanced that replacement of the component is necessary to solve the problem. However, greater consideration should be given to trying these inexpensive automotive additives prior to undertaking repairs. Quality leak stopper products will not harm a vehicle and they provide an inexpensive alternative to major repairs. Furthermore, some leak stopper brands provide an unconditional money back guarantee if the products do not halt the leak. Furthermore, they can help protect the environment from harmful leaking fluids.