STP Radiator Flush – 300ml | Carbon Cleaner


  • Contains an advance formula that cleans cooling system & effectively.
  • Clears clocked water channels that can cause overheating.
  • Removes rust & sludge.
  • Suitable for all radiator types.
  • Safe for rubber hoses, metal parts & gaskets.
  • Easiest to use cooling system cleaner.


STP Radiator Flush – 300ml | Carbon Cleaner

Radiator Flush contains an advanced formula that cleans the cooling system quickly and effectively. It clears blocked water channels that can cause overheating, removing rust and sludge. Use before changing coolant or adding antifreeze, to help keep your cooling system in optimum operating condition.


Radiator Flush should be used as follows;

  • Shake bottle well & pour entire bottle into radiator.
  • Leave in the cooling system and drive for about 30 minutes.
  • Drain the radiator when cold, flush and refill with appropriate coolant/anti-freeze per manufacturer instructions.
  • On vehicles where heater cannot be drained (see handbook), run the engine with the heater on, until the engine has warmed up, then drain the system and flush with clean water before adding anti-freeze.


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