ACDelco RADIATOR STOP LEAK

ACDelco Radiator Stop Leak

ACDelco Radiator Stop Leak provides a lasting radiator and block seal. Its non-metallic formula will not change the chemical balance of radiator coolant, and it will not adversely affect metal or rubber parts of the cooling system. It mixes with all types of rust inhibitors, antifreeze, and coolants.

FEATURES AND BENEFITS

  • Mixes with all types of rust inhibitors, antifreeze, and coolants
  • Provides a long lasting leak seal
  • Developed to exceed your performance expectations

SIGNS OF WEAR AND TROUBLESHOOTING

Coolant discoloration is a sign of too high a concentration of stop leak additive within the cooling system. This can occur if stop leak additive are used repeatedly over the service life of an engine.

GOOD MAINTENANCE PRACTICES

  • Use the proper amount to ensure premium results. Read product instructions for direction.
  • To avoid accidental burns, allow the radiator and cooling system to cool before use. The radiator and cooling system is cool enough when the palm of the hand can be comfortably placed on top of the radiator cap, and the top radiator hose can be hand squeezed indicating that the system is no longer under pressure.
  • These tablets should NOT be used as a regular maintenance item after servicing an engine cooling system.