Product Does not Stand up to its Name

I recently purchased RADIATOR STOP LEAK - Cooling System to assist in sealing a small leak in my motorcycle radiator. After following instructions and idling the motorcycle – I emptied the contents into the radiator and replaced the cap. After about 30 minutes the leak was still prevalent . This product does not claim to do what it is intended to and has been a complete waste of money. I have since tried HOLTS and it is a far more superior product as the leak has stopped almost immediately after adding the contents to the Radiator . Thank you HOLTS.