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EFV-8 Club Forum / General Ford Discussion / Antifreeze concentration level

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Discussion Topic: Antifreeze concentration level -- page: 1 2

Old Henry

01-14-2016 @ 7:13 AM

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Prestone now sells propylene glycol antifreeze called LowTox. Probably more readily available than Sierra.

len47merc

01-14-2016 @ 6:46 AM

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Thanks Grant - seems I recall TomO referencing that quite some time back as well. Looking for Sierra locally today - your quoting that jogged the memory and catalyzed my action to make the change!

Steve

Grant

01-14-2016 @ 6:31 AM

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Happy New Year to one and all.

The late Dick Flynn published a terrific book called Technical Tips which contains dozens of excellent flathead maintenance articles.

I believe that copies are still available through his daughter.

Above and beyond the better cooling advantage of propylene glycol versus the ethylene-based product, Dick says:

"I only use Propylene Glycol antifreeze topping off with distilled water. Propylene Glycol antifreeze won't ruin engine bearings if entered into engine oil. Ethylene Glycol antifreeze will instantly ruin all engine bearings."

Sounds ominous.

Any thoughts?

(quoted from page 47 of FOURTH EDITION - SPRING 1998, copyright 1980 and 1989)

len47merc

01-14-2016 @ 5:38 AM

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Very good chart to have in resource documentation - thanks! Interesting website as well btw -

Steve

mrtexas

01-13-2016 @ 7:20 PM

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https://sites.google.com/site/mrtexascitrus/home/antifreeze

len47merc

01-13-2016 @ 3:33 PM

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Old Henry - FYI sent you a p.m.

Steve

len47merc

01-13-2016 @ 1:41 PM

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Tom - thanks. FYI sent you a p.m.

Steve

TomO

01-12-2016 @ 6:39 AM

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My Lincoln gets a mixture of Sierra and water that is changed every 3 years. It runs cool and never overheats. It still has the original radiator core.

My 40 Merc usually gets changed over to distilled water with rust inhibitor and Water Wetter in the summer. It didn't get the change last summer, due to my busy schedule. It still has the the Sierra mixture put in the fall of 2014. I change it because the Merc does'nt like traffic. The heat gauge needle likes to bury itself on the right side. With water , I can idle in traffic for 15 minutes, with the antifreeze mixture, I get 10 minutes.

Tom

len47merc

01-11-2016 @ 1:35 PM

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Thanks Old Henry - good studies. Had seen the propylene vs ethylene glycol study before but not the additive. Greatly appreciate it -

Steve

Old Henry

01-11-2016 @ 1:01 PM

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Here is the study comparing the two types of antifreeze that you can review and decide for yourself which to use: http://www.engineeringtoolbox.com/ethylene-propylene-glycol-d_904.html

Here is a great study comparing 4 different coolant additives for you to review and see which one best fits your kind of driving: http://www.superstreetonline.com/how-to/engine/0703-turp-cooling-system-additives/

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