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Old 11-26-2016, 11:42 AM   #4
38bill
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Join Date: Apr 2014
Location: Minnesota
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Default Re: Any particular antifreeze for a 221 flathead

Quote:
Originally Posted by 36Bill View Post
I use Sierra antifreeze, it is proplyene glycol and is safer for animals.

http://www.peakauto.com/products/ant...motive/sierra/
Me too, and the insides of my alum heads still look like brand new after 17 years on the road.
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