[trisham]

I found this, which doesn’t mention alcohol..

http://www.ehow.com/facts_5813733_windshield-washer-fluid-made-with_.html

Could it be that only those formulas that don’t contain alcohol are the problem?

[WayneS]

That's why I use only White Lightnin' brand washer fluid in my vehicles.

It's 190 Proof of pure windshield cleaning power.

I have a reliable supplier in Franklin County - and if he's out of stock I can always import some from nearby West Virginia or Kentucky.

[Charles Martel]

Could it be that only those formulas that don’t contain alcohol are the problem?

It might also have something to do with the large size of the washer reservoirs on today's cars and trucks, as well as the fact that alcohol will tend to evaoprate out in hot weather. If you don't use the washer often and rarely top it off with fresh fluid, there might be very little alcohol present.