Can anyone tell me or give me a link (for some reasons search engine isn't working at the time) of how to flush the coolant? I saw some videos suggested using flushing fluid or water. Which one I am supposed to use.
Read the following for more information. How to replace engine coolant pump and thermostat | PriusChat AND Changing engine coolant | Page 2 | PriusChat with emphasis on post #22 and #42.
Don't forget that your Prius has two separate cooling systems. The engine coolant and the inverter coolant. Engine coolant in the top 2/3 of radiator and inverter coolant in the bottom 1/3. Totally separate. The engine coolant has 3 drain cocks: radiator, engine block and coolant heat storage tank. Radiator bleed valve is on top of radiator on driver's side. Have to remover radiator support cover. The inverter coolant is a simple drain and refill, no flushing. There is a small bleed valve in front of the inverter. I have previously posted "How to Replace Gen II Prius Engine Coolant" and "How to Replace Gen II Prius Transaxle Coolant" in Adobe pdf files.
