>From: Ronsoave@aol.com
>Reply-To: Ronsoave@aol.com
>To: trunkie@hotmail.com
>Subject: Re: anti freeze & corrosion
>Date: Sun, 11 Apr 1999 10:48:11 EDT
>
>In a message dated 99-04-11 10:17:53 EDT, you write:
>
>> This property of coolants requires that you always mix it to at
least
>> the recommended concentration, so that there is sufficient
>> concentration of corrosion inhibitors to protect the metal from
the
>> glycol.
>
>Wouldn't the concentration of inhibitors be the same regardless of
the %
>mixture? If its ml of inhibitor per liter of EG , and if you're
only
>protecting from the EG, then you'd be covered regardless of the EG-
Water
>ratio.
Logically, yes but...
The glycol is corrosive even when its concn. in the system is low, and
if [glycol] ([]=conc.) is low then chances are [inhibitor] is low too.
The 'corrosiveness' is not directly proportional to [glycol] ,it does
increase but not at the same rate as [gly], at low anti freeze conc.s
there is sufficient glycol to corrode and insufficient inhibitor to
protect. When mixed correctly the [inhibitor] is sufficient to
protect from corrosion.
I would represent this concept with a couple of graphs but we're
not allowed to send attachments are we?
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