Home Hardware sells pure propylene glycol. Search for Cryo-Tek concentrated antifreeze. 18.9 liters ( 5 US gallons ) is $135.
It may be that glycerin based antifreeze is the best choice for winterizing an engine block though other than in sprinkler systems it has not caught on. Michael Brown Windburn C&C 30-1 From: Steve Thomas <sthom...@bellnet.ca> The plumbing antifreeze sold here is denatured ethyl alcohol (ethanol), which is not great for rubber parts, but not as bad as methanol. As I noted in my last post, there is sometimes available a "premium" version plumbing antifreeze, which does contain at least some propylene glycol, but it contains ethanol as well. I went to some lengths to try and get a product that was based solely on propylene glycol and was not successful here in Ontario, and I could find nothing online anywhere in Canada, except as I also noted previously, the grossly over priced speed shop engine stuff. Either you have had good luck with ethanol, or the plumbing antifreeze that is available where you live is different. I wasn't so worried about the impeller in the engine as I am about all the rubber parts in the head. It is both a PITA and expensive to rebuild. Steve Thomas C&C27 MKIII Port Stanley, ON
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