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NWC Ohio | It appears to me that you need to look at actual ingredients.
Green (automotive) ethylene glycol.
Blue/purple HD ethylene glycol with SCA additives for diesel engine and wet liners. (This used to be a green color also, but it appears it has changed locally). You do need to keep up with the SCA maintenance levels.
The Red is a POAT (I forget the words) but it’s a long life Diesel coolant and not to be mixed with anything else.
This is what my understand of what I have read so far.
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