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      10-13-2020, 03:27 PM   #1
VETTEPRO
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Antifreeze question.

I have used "40 Below" in many of my supercharged Corvettes. It actually does lower engine temps. I've used it for 20 years or more.
The problem is that it absolutely cannot be used with a "Dexcool" type product. Flushing the cooling system will not get every drop of coolant out of it.
Is the factory blue coolant an ethylene glycol based coolant? ( both engine coolant as well as intercooler coolant) I don't want to put it in if there is even a hint of the same stuff they put in Dexcool.
This is mainly for the intercooler/ heat exchanger system.
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      10-18-2020, 06:16 AM   #2
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Good question I'm going to look into this and ask a few tech friends do a little research and see what I come up with.
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      10-18-2020, 01:40 PM   #3
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Thanks. If nobody really knows, I'll mix a little bit of coolant with the 40 Below, heat it up on my heating plate and see if it coagulates.
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      10-20-2020, 12:59 PM   #4
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Quote:
Originally Posted by VETTEPRO View Post
Thanks. If nobody really knows, I'll mix a little bit of coolant with the 40 Below, heat it up on my heating plate and see if it coagulates.
It is a glycol based coolant.
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      11-17-2021, 08:16 AM   #5
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Here's some info about suitable BMW coolant from the BMW TIS:
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