Best Anti-Freeze

A

Atlasboy

Junior Member
What would be the best Anti-Freeze to use for protection down to Zero.
My engine is ( I think ) original with no past rebuilding, and it still runs strong.
I just seem to remember that some Anti-Freezes can get into small crevices and damage the engine.
 
I use Menards premixed in both of my Model A's with no problems. I think all of the modern anti-freezes can be used with no problem.
 
Some in my Model "A" Club have had problems with Anti-Freeze foaming. I wonder if modern (Long Life) Anti-Freeze may foam in nonpressurized cooling systems. I use O'Reilly Anti-Freeze for older cars (70's & 80's) in my Town Sedan. No problems.
 
Some folks use the commonly available 50-50 mix ethylene glycol based and others prefer propylene glycol for older engines. Check some blogs on the net , etc. for further discussion
as it can be somewhat technical. We use distilled water to top off as necessary.
 
When I used the coupe as a daily driver I used Prestone antifreeze. It almost never goes to zero here . You would need to use a tester to determine the ratio of water to antifreeze . I used one gallon of Prestone with two gallons of water. I only used antifreeze in winter .Antifreeze raises the boiling point but doesn't raise the cooling ability . Modern cars need to run at higher temps than the primitive cooling system of the model A .
 
I use Peak "Green" for cars 1989 and earlier at the same ratio as Purdy. Good for ~0° per chart. Good enough for SoCal.

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Purdy Swoft said:
When I used the coupe as a daily driver I used Prestone antifreeze. It almost never goes to zero here . You would need to use a tester to determine the ratio of water to antifreeze . I used one gallon of Prestone with two gallons of water. I only used antifreeze in winter .Antifreeze raises the boiling point but doesn't raise the cooling ability . Modern cars need to run at higher temps than the primitive cooling system of the model A .
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If you're running plain water in the summer, you have a self-propelled rust factory!
 
The "green" kind. Mixed 50/50 or more. Good for beyond -30 F. We do get -40 or so sometimes so I mix it a little strong.
 
There are only two kinds of anti-freeze. eythelene gycol and polypropolene gycol. The poly propolene stuff is the "green" kind and tends to foam less. the percentage of water to antifreeze determines how low temp you are protected.

Actually there is a third type but I dont recommend peeing in your radiator. he-he
 
I use the green stuff and add my own water. If you insist on 50/50 make your one. You just need one empty jug. :)
 
Clem Clement said:
There was talk awhile back the long life antifreeze eats radiator solder. I don't know what to believe.
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Best I can recall, there used to be some concern that one of the antifreeze types (forget which one) would eat up babbitt material, should you get a cooling leak into your crankcase. Did anyone else hear anything about that? Is it a legitimate concern?

The only reason I ask is that one of the few A guys in my area was the auto mechanics instructor at our local high school for about 35 years and one time while talking A's he mentioned this to me. I never followed up on it, but was curious if there is any basis to this.
 
Any kind of antifreeze in the crankcase is harmful as it will erode any type of bearing material.

For polling purposes, I like the old fashioned ethylene glycol mixed with distilled water.
 
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