Price of bottle is more than price of coolant, 300ml is recommended for upto 10liter coolant capacity vehicle. My bike has coolant capacity of 1liter, so I used around 35ml, remaining is waste as recommend service interval for Honda CBR250R is 3 years. Overall I used it because of my bike is 8 year old and 20k odometer reading. Uses 1. Worm up the engine 2. Drain coolant 3. Fill distilled water mix Radiator flush 4. Start the bike upto 30min, depending upon cleaning effect 5. Drain it, fill distilled water again to remove remaining radiator flush 6. Start the bike for few min. 7. Drain and fill new coolant As it is a detergent for cleaning the coolant circuit, I recommend to use only when bike is second hand or cheap quality coolant used.
It performs better in cleaning the radiator.