Hi Tom;
I think washer fluid typically contains 20 to 40% alcohol but I notice
that on the cold days if I use the lower percentage the fluid can
momentarily freeze up on the windsheild after wiping leaving streaks of
ice. The higher percentage doesn't do this.
Joe
PAUL MILLER wrote:
Hi Tom: A friend who mixes windshield wash commercially uses 35% in
the winter. That is plenty strong for Montana, but if he uses that
strength he does not have to worry if the temp goes below -10F by
several degrees.
Paul
----- Original Message -----
*From:* Thomas Kelly <mailto:[EMAIL PROTECTED]>
*To:* biofuel <mailto:Biofuel@sustainablelists.org>
*Sent:* Thursday, November 23, 2006 6:33 PM
*Subject:* [Biofuel] Methanol as Windshield wash antifreeze
Help if you can.
I have relatives that own a bus company. They have 150+
gallons of windshield wash fluid. It is not winterized. How much
methanol should be added to each gallon of washer fluid in order
to prevent freezing to say ....
-10F (-23C) ?
I will experiment as follows:
Small sample of fluid in freezer .... check temp it freezes at
Add measured amount of methanol ..... check temp it freezes at
Repeat until I get a vol:vol ratio that produces the desired
results.
I have other things to do tomorrow .... if anyone has a
better plan/knows the correct ratio it would be appreciated.
Tom
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