TJ2
TJ Expert
We used mountain stream water in the island when we were kids - no glycol just straight water, for years.Well, water is a more efficient coolant then glycol and it will not boil or create vapor pressure in a closed loop system which is all correct, beyond that nowhere did I state to run water vs glycol so don't worry about it. Again it was just a clarification of glycol properties.
Typically I run straight distilled water for several days after any major repairs to the cooling system (temps permitting) to prove system is tight and for the purposes of flushing.