How many liters does one bottle treat?

I’m not sure, all that I can say is that you put the full bottle in and let it run through the system. I used it on my 2.0L Mercedes and it cured what was quite a bad leak

Do i add this when engine is hot or warm or cold?

Add when cold then turn engine on to circulate and get hot around 15-20 mins by then the leak should have stopped.ps wait till your water is on the low mark to allow for the rad weld fluid.

How easy is it to use.

Very easy ,follow instructions on product

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Description

🚗 Don't let leaks drive you crazy!

QUICK FIX - Stops leaks in radiators and hoses, getting you back on the road faster.
HOSE HARMONY - Safe for use with rubber hoses, ensuring compatibility and peace of mind.
COMPACT POWER - Lightweight at 290g, easy to store and use whenever needed.
SEAL THE DEAL - Permanently seals radiator leaks for lasting protection.
CORROSION FIGHTER - Packed with rust inhibitors to extend the life of your cooling system.

The ARZERCar Radiator & Hose Stop Leak Repair Additive is a powerful 250ml solution designed to permanently seal radiator leaks while being safe for rubber hoses and unaffected by anti-freeze. With built-in rust inhibitors, it ensures your cooling system remains in top condition, making it an essential tool for any vehicle owner.

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