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Old 10-05-2004, 12:25 PM   #1
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Question Homemade Windshield Wiper Fluid ?

Consumer Reports once published a recipe for homemade windshield wiper fluid. Can anyone post it or give an equivalent ? If I remember correctly, it involved water, isopropanol, ammonia, and a couple of drops of dishwashing liquid.


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Old 10-05-2004, 12:34 PM   #2
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Why?
You can get a gallon of wiper fluid for like a $1
$2 if you want the stuff that de-ices your windshield.
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Old 10-05-2004, 12:36 PM   #3
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^Yeah, really.

You aren't THAT cheap are you?
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Old 10-05-2004, 12:46 PM   #4
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Lightbulb

Quote:
Originally posted by microtonal
Why? You can get a gallon of wiper fluid for like a $1
$2 if you want the stuff that de-ices your windshield.
A lot of Europeans don't use the store-bought stuff because they think high levels of alcohol (and ammonia ?) deteriorate rubber and paint.

If you use a lot of windshield washer fluid because of filthy winters - such as here in Ontario, Canada - it's useful to carry in the trunk a small bottle of homemade "concentrate" to add to water, rather than a big 4-litre bottle of fluid. Used to be you could find windshield fluid concentrate everywhere, but not anymore.

Besides, why pay for something you can easily make for a few cents ?
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Old 10-05-2004, 12:53 PM   #5
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Your reasoning was good until the last sentence~ you are CHEAP!
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Old 10-05-2004, 02:34 PM   #6
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Quote:
Originally posted by microtonal
Why? You can get a gallon of wiper fluid for like a $1
$2 if you want the stuff that de-ices your windshield.
A couple of problems with the cheap $1/$2 commercial stuff: I'm told the $1 stuff usually contains methanol rather than isopropanol. I'm told methanol flashes off faster, leaving water to slush up and freeze on the windshield. Also, at temperatures above freezing, the high alcohol content of the fluid is not much good for actual cleaning. (Can't vouch for any of this - just reporting)

BMW owners laugh at gullible Americans who buy the cheap $1 blue commercial windshield fluid. Apparently, people happy with buying the cheap $1 blue stuff for their old beaters can expect wax stripping, corroded wiper arms, and rubber and paint deterioration. BMW owners say they prefer the high-tech German stuff which has to be smuggled in from Germany or Canada. See http://www.bimmerfest.com/forums/arc...ex.php/t-4084.

At temperatures above freezing, I used to use P21s windshield fluid booster. Great for cleaning grime and bug guts, but by itself P21s is not an effective "antifreeze". See http://www.carcareonline.com/detail....oduct_id=10414. I don't know whether P21s mixes well with high alcohol ("-40") cheap blue windshield fluid.

Last edited by Kalos; 10-05-2004 at 10:23 PM.
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Old 10-05-2004, 02:38 PM   #7
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i just use dishwashing fluid. j/k
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Old 10-05-2004, 02:44 PM   #8
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By the time all this deterioration occurs, won't your car have like 200K miles and be 20 years old?

I need to see a study on this and would like to see some scientific data over a period of time that backs up these claims of deterioration of parts.

Otherwise, it's just speculation and preference.
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Old 10-05-2004, 02:55 PM   #9
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Quote:
Originally posted by xgambit
i just use dishwashing fluid. j/k
Dishwashing liquid is great for cleaning grease off dishes. Has the same effect on car wax...
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Old 10-05-2004, 02:57 PM   #10
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i know, i was just kiddng, sheesh.
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