Hello, I have a Honda Accord 2006 EX, 4 Cylinders. I bought it recently , and I noticed quite late that the previous owner used water instead of the recommended coolant in the radiator.

I want to do the right thing and use the recommended coolant. But I don’t know how to drain all the water completely from the cooling system. I know how to drain the radiator (by unscrewing the white rubber at the bottom of the radiator), but I don’t know how to drain all the water from the tube lines and the entire system.

I am getting an error :

P0128

Raw code: 0128

ECU: 09

Status: Confirmed

Coolant thermostat - coolant temperature below thermostat regulating temperature

From my research, I have to replace the coolant thermostat , while replacing it, I want to take advantage of the opportunity to use the right coolant liquid.

I would appreciate any help, or video tutorials.

Thanks .

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