There is a school of thought that maintains that the impeller might deteriorate in the antifreeze, especially, since most of the AF is Ethylene Glycol. IIRC, the better one would be Propylene Glycol, but it is not easily available.
Btw. if AF drains, it is only better (you don’t have to worry about water diluting the AF. Marek 1994 C270 “Legato” Ottawa, ON From: David Platt via CnC-List Sent: Friday, October 14, 2016 10:37 To: [email protected] Cc: David Platt Subject: Re: Stus-List WInterizing 2GM20F Tim I am curious about why you advocate taking the impeller out. Won't antifreeze drain out of your engine when you take the cover off the water pump? Respectfully david C&C 32 Wanderer
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