JaxDad wrote:
ripperoo wrote:
Well I doubt that the propylene glycol caused any "fumes" as it has a very low vapor pressure.
Me neither..that's why I said plain old water vapour will set off CO detectors.
It is not the propylene glycol that is setting it off, rather it is most likely the ethanol in the antifreeze. The MSDS for the antifreeze I'm using contains up to 12% propylene glycol and up to 30% ethanol. I blew out my lines about a day before I put in the antifreeze so it definitely is not water vapour. As soon as I pumped the antifreeze through and opened the taps, the propane alarm went off (not the CO).
