Two months ago, my friend and I completely drain the old coolant, and flushed the coolant system with home water hose. And then, we refilled the new coolant. However, when we flushed and refilled the coolant, we didn't open the air relief plug. So I didn't bleed my coolant system properly.
And then about one month ago, my car overheated in a very hot day. I checked the coolant reservoir. It was empty, so I filled in with drinking water. After that, my car has no overheating issue. However, whenever I refilled the coolant reservoir, the coolant in the coolant reservoir would be emptied after about 30min of driving.
The things that are strange are:
1) The meter shows no overheating. The needle stays in the the middle between "H" and "C".
2) There is no coolant can be found under my car.
My real question is: Where did the coolant go?
So this could be the following problems:
1) I didn't bleed the coolant system properly. Then, why no overheating but missing coolant in the coolant reservoir?
2) The coolant reservoir is cracked, so it's leaking slowly. Or some coolant hose is leaking slowly.
3) The coolant fan is leaking or not functioning properly?
Thanks!
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