Permanently seals leaks
- Prevents rust and deposits
STP® Radiator Sealer is designed to repair radiator leaks quickly and effectively, forming a permanent seal. It contains corrosion inhibitors to help prevent the formation of rust and deposits. This car radiator leak sealer also lubricates the water pump.
How it helps:
- Repairs leaks quickly
- Provide permanent seal for radiators
- Lubricates water pump
- Run the engine until the coolant is warm (not hot).
- Shake bottle well & pour entire bottle of STP® Radiator Sealer into radiator.
- Run the engine for approximately 10 minutes or drive a short distance, allowing seal to harden. Be careful when opening the radiator/cooling system: hot coolant or steam might escape. One bottle treats cooling systems up to 14 litres capacity.
Usage Frequency: Use as required.
Frequently Asked Questions
STP® Radiator Sealer is suitable for all types of radiator, all types of antifreeze and safe for rubber hoses, metal parts and gaskets.