Coolant change 2010 mazda 3 sport? - Mazda3 Forums : The #1 Mazda 3 Forum
 
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post #1 of 2 (permalink) Old 03-20-2017, 02:15 PM Thread Starter
Bicycle Rider
 
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Coolant change 2010 mazda 3 sport?

Had a few questions. I did a coolant change the other day and here is what I did. I emptied fluid from radiator, plugged and refilled reservoir with distilled water. Ran car for 10 min with heater on high. I repeated the process about 3 times til is was almost clear fluid coming out. I think filled reservoir with 50/50 mix of coolant. After thinking about it, the heater core probably had the distilled water in and my system probably doesn't have the correct mixture. I have driven the car about 50 miles now (i live in atlanta and the temp isnt going to get very low until next winter). But I am thinking I should drain radiator again and fill with more 50/50 coolant. Thoughts?

Also, I noticed when I drove this morning (it was about 45F) 25 miles I parked and popped the hood and noticed the radiator fan wasn't on? After 25 miles of high way driving I would think the motor would be at max operating temp? Being the 2010 mazda3, there is no temp gauge. I have never seen the temp light come on or flash or anything (which i guess is a good thing).

Thanks for help! Also, it is a 2010 mazda 3 sport with 110k miles.
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post #2 of 2 (permalink) Old 03-20-2017, 04:20 PM Thread Starter
Bicycle Rider
 
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UPDATE: well it must not have been at temp high enough to fun fan, on way home today I turned on the AC and when i got home the radiator fan was running, so thats good it works haha.
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