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09-18-2017, 12:59 PM | #1 |
Senior Member
Join Date: May 2010
Location: Lakewood, CO
Posts: 413
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Anti freeze help
Good morning guys. I made the mistake of doing a google search on antifreeze and was overwhelmed with info. Now I am afraid I am over thinking this. For a 50/50 mix does it matter if I use regular ethylene glycol (old green anti freeze) or should I use propylene glycol (Sierra) for my flathead?
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09-18-2017, 01:03 PM | #2 |
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Join Date: Jun 2013
Location: Marana Arizona
Posts: 1,776
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Re: Anti freeze help
The green has always worked just fine for my 1952 F-1 truck. Suggest that you buy the concentrated stuff and make your own 50/50 mix. Saves money in the long run.
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09-18-2017, 01:33 PM | #3 |
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Join Date: Jul 2010
Location: 36 miles north of Albany NY
Posts: 2,954
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Re: Anti freeze help
Same here, just get the full strength green, I checked mine with an anti-freeze tester, good to go at -40 below.
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09-18-2017, 01:46 PM | #4 |
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Join Date: May 2010
Location: Coral Springs FL
Posts: 10,950
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Re: Anti freeze help
Go with the green
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09-18-2017, 05:46 PM | #5 |
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Join Date: Apr 2014
Location: Minnesota
Posts: 1,166
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Re: Anti freeze help
I have been using propylene glycol for 17 years (its green also). My truck runs cool and the inside of the aluminium heads still look like new so thats good enough for me. Its supposed to be less toxic also.
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09-19-2017, 06:19 AM | #6 |
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Join Date: Apr 2011
Location: Hertford (UK)
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Re: Anti freeze help
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09-19-2017, 06:23 AM | #7 |
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Join Date: Nov 2012
Location: Wichita KS
Posts: 16,132
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Re: Anti freeze help
One thing to think about is the water you use. The fewer minerals in the water the better!
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09-19-2017, 07:50 AM | #8 |
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Join Date: May 2010
Location: Florida and Penna.
Posts: 4,471
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Re: Anti freeze help
Green for 35 years in 35 plus old Fords. Aso use a bottle of Bars copper sealer and two
bottles of a wetting agent such as Purple Ice. G.M.
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09-19-2017, 09:41 AM | #9 |
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Join Date: Oct 2010
Location: Orem, Utah
Posts: 5,762
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Re: Anti freeze help
Here is an excellent scientific comparison of the two antifreeze types.
http://www.engineeringtoolbox.com/et...col-d_904.html As a result of this information I chose the propylene glycol because it is safer for animals (I had a dog die of sipping ethylene glycol my son left in a bucket) and it transfers more heat at slower coolant flow rates. Prestone now sells a propylene glycol called LoTox. Same as Sierra but cheaper.
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09-19-2017, 09:42 AM | #10 |
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Join Date: Oct 2010
Location: Orem, Utah
Posts: 5,762
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Re: Anti freeze help
Amen, I use distilled or soft water whenever I can.
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Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness |
09-19-2017, 12:31 PM | #11 |
Senior Member
Join Date: May 2010
Location: Lakewood, CO
Posts: 413
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Re: Anti freeze help
Thank guys. Going green.
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09-19-2017, 06:37 PM | #12 |
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Join Date: May 2010
Location: New York State
Posts: 289
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Re: Anti freeze help
I use Sierra and distilled water. Runs cool and no problems.
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