Coolant issues
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You are currently reading a thread in /o/ - Auto
I recently change the coolant pump and the coolant itself.
I had a few problems since then where temperature wasn't stable. I did 3 different bleedings of air with some inclination and none of them seemed to work.
After that I changed the temperature sending unit and apparently that was the main issue.
Now the car runs slightly hotter than previously, check the image blue line is now and green line in the middle was previously.
My question is can a -26C coolant for cold climates be the reason it is running hotter when normally over here you would use a -5C coolant. So is there a chance that due to the alcohols and chemicals in it it has worse cooling abilities?
PS: Honda Civic 98
Yes, water works better than antifreeze at exchanging heat.
The higher the antifreeze percentage the worse it will be in warm weather.
>>13965879
So I shouldn't worry too much on that slight difference.
Like the engine runs perfect, no engine light and I only need to do a 3500km trip to a colder region.
>>13965889
Well, you should use the proper coolant.
But, no I wouldn't really worry about it being where it is.
Try rebleeding it but squeezing all the kinks and bends in the radiator hoses with the car inclinded so the open cap is the highest point.
>>13965889
I wouldn't worry too much since you changed out the sending unit.
>>13965889
Honestly, you should just drain like 20% of it out and fill with water and then refill with antifreeze when you get to a colder climate.
I'm sure it's fine, but if I was about to go on a 2,000 mile drive I'd make sure my cooling system wasn't fucking up.
>>13965939
That would just dilute the capabilities of the coolant.
I might do that since I am not particularly happy of doing a trip like that with "overheating"
>>13965950
Water is the coolant. The antifreeze doesn't cool.
A car with 100% antifreeze would overheat as if there was nothing in the radiator at all.
I don't know what mixed you used, but it shouldn't really overheat even with 50/50 mix. Could just be your gauge or something like the sending unit not calibrated to the gauge, idk. But 50/50 shouldn't over heat even if it's like 20c outside.
>>13965889
It'll actually be better on fuel ever so slightly
Thanks for the help guys.
It may be an issue with your thermostat not opening properly
