Add 16oz of Isopropyl Alcohol to 1 gallon of Windshield Washer fluid, this keeps it from freezing. Do this around 1 month before it starts freezing outside and keep adding this every time you fill up all Winter long.
I use an empty gallon and fill it 1/2 way so I have 2 gallons that are 1/2 full and then add 1/2 bottle of Isopropyl Alcohol to each 1/2 gallon.

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Mark V
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They say if you play a Microsoft CD backwards you hear satanic messages. Thats nothing cause if you play it forwards it installs Windows....
1998 Windstar GL 3.8L
1998 Explorer XLT 4.0L SOHC
2001 Corvette 6 speed 5.7L