Quote:
Originally posted by ElCoHaulic
Is methanol/water best? Can I use Isopropyl instead? What is the highest % of alcohol/methanol to water will be safe for my pump? Ive also heard that glysol might be good. Yes/No?
Thanks in advance!
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I run 40% ethylene glycol in my system and the coolant temps go down to -25C.
The best coolant mix is methanol BUT and I emphasize the but this is a very dangerous thing to use if any kind of open system is planned. Even though the methanol is in water it does evaporate which means that if an open system is used you'll be inhaling it. Methanol is highly toxic leading to fatal and irreversable liver and brain damage with prolonged exposure.
Ethanol (so called alcohol ) and isopropyl alcohol are no more effective than ethylene glycol but because they also evaporate are also a health hazard. I have tried the ethanol route.