Have another question for anyone who has any info, I'm due for the coolant change on my Maxima and have a question do I have to drain the whole cooling system or just drain the radiator and reservoir and refill with Nissan OEM coolant or should I drain the radiator then run water through the system before replacing with coolant? Some people I've spoken to tell me to just drain the radiator and reservoir and refill with new coolant and call it a day does anyone here on the forum have any insight on this or step by step process on how they've had it done?

Thank You

 

Drain, fill with water, you can get a flush concentrate to mix with water, run the engine until hot, let cool, drain again. You could even do a second rinse if you have time, nothing wrong with that, get's all of the concentrate out. Then fill with appropriate coolant.

 

Thank you I really appreciate the info. I will do that as soon as the weather gets better.

 

Be sure to use distilled water.