Radiator Leak Protector

Radiator Leak Protector

Suitable for All Aluminium, Plastic and seal Radiators

Improves radiator leak protection
907083 Radiator Leak Protector 250ml 0 5x


Rymax Radiator Leak Protector permanently and reliably seals and prevents within seconds hair cracks and small leakages in the radiator, the heater radiator, the water pump, the cylinder head gasket and the engine block. It lubricates the pump and protects the entire cooling system against rust and corrosion. The additive can be used in all the aluminium, plastic and steel radiators of cooling systems in petrol, diesel and LPG engines. This protector is compatible with water, cooling fluids and conventional anti freeze.

How to use?

  • Shake the product vigorously before use to ensure proper mixing of the contents.
  • Ensure that the engine is slightly warm but NOT hot before proceeding.
  • Switch off the engine and locate the radiator.
  • Open the radiator cap or coolant expansion tank, depending on the type of cooling system.
  • Carefully pour the entire contents of the can into the radiator or coolant expansion tank.
  • Ensure that the cooling system is tightly closed by securely closing the radiator cap or coolant expansion tank cap.
  • Start the engine and let it run for 10 minutes. Alternatively, you can drive a short distance with the heating system switched on.
  • During this period, allow the product to circulate throughout the cooling system, ensuring proper distribution and effectiveness.
  • After the specified time has passed, switch off the engine and allow it to cool down before performing any further maintenance or checks.
  • Please note that these instructions should be followed carefully and may vary depending on the specific product and vehicle. Always refer to the product's instructions for the most accurate and up-to-date guidance.

Note: Be careful when opening the radiator / cooling system: hot coolant or steam might escape from the system. Dirty cooling systems should first be cleaned.

One bottle is sufficient for cooling systems with a volume of up to 12 litres.






  • Permanently and reliably seals and prevents hair cracks and leakages in the radiator, the water pump, the cylinder head and the engine block.
  • Eliminates the need for expensive repair.
  • Protects the entire cooling system against rust and corrosion.
  • Lubricates the water pump.
  • Does not contain acids and is not poisonous.
  • Does not harm rubber hoses, metal parts and gaskets.

Available in

size-icon-025l 0.25L
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