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Discussion Starter · #1 ·
In much of California, you can't buy antifreeze windshield washer fluid (due to CARB rules). I've decided to make my own, rather than waiting until the last minute to buy it when I hit a mountain town that sells it.

From http://www.engineeringtoolbox.com/ispropanol-water-d_988.html I determine that a 50/50 mix of pure isopropanol and water is good down to -5F which is about the lowest I expect to see this winter. I've got a jug of 90% isopro, so I figure if I just dilute my existing washer fluid with the rubbing alcohol I'll be good to go.

The problem : I've searched the volt user manual and I can't find the capacity of the windshield washer fluid reservoir.

Anyone know?
 

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Closest I could find is from a link in the "Similar Threads" box..
I was surprised that the reservoir took almost the entire gallon of fluid I bought (just a few ounces short). Previous cars I've owned only had maybe ½ or ¾ gallon ones.
 

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I see a "California's Foie Gras Ban Goes Into Effect " but not a ban on Rain-X ?
 

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The -20F Super Tech washer fluid is 30% Methanol. Methanol is also readily available as the HEET gas additive.
 

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You can buy the propylene glycol winterizing fluid used in RV and mix it. At least it is safer, non-toxic, cheaper and has way lower temperature for freezing than isopropanol or methanol. Mixing just 10-15% should do the trick. There is one for -50F and another mix for -100F. The caution is to mix it with regular washer fluid before pouring it in.
 

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Discussion Starter · #7 ·
You can buy the propylene glycol winterizing fluid used in RV and mix it. At least it is safer, non-toxic, cheaper and has way lower temperature for freezing than isopropanol or methanol. Mixing just 10-15% should do the trick. There is one for -50F and another mix for -100F. The caution is to mix it with regular washer fluid before pouring it in.
Re propylene glycol:
http://mobile.engineeringtoolbox.com/propylene-glycol-d_363.html
Says that you need a ~40% solution to get to -5F so it's not a ton better than isopropyl alcohol.

Methanol is the best as you only need a 20%ish solution to protect to -5f
http://mobile.engineeringtoolbox.com/methanol-water-d_987.html

Though of the choices, methanol is also most toxic.
 

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In much of California, you can't buy antifreeze windshield washer fluid (due to CARB rules). I've decided to make my own, rather than waiting until the last minute to buy it when I hit a mountain town that sells it.

From http://www.engineeringtoolbox.com/ispropanol-water-d_988.html I determine that a 50/50 mix of pure isopropanol and water is good down to -5F which is about the lowest I expect to see this winter. I've got a jug of 90% isopro, so I figure if I just dilute my existing washer fluid with the rubbing alcohol I'll be good to go.

The problem : I've searched the volt user manual and I can't find the capacity of the windshield washer fluid reservoir.

Anyone know?
Wow. Think you should read the CARB regs. http://www.arb.ca.gov/consprod/regact/awwf/awwf.htm Concentrate is available throughout California. Only pre-mix is limited to cold areas
 

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Discussion Starter · #9 ·
Wow. Think you should read the CARB regs. http://www.arb.ca.gov/consprod/regact/awwf/awwf.htm Concentrate is available throughout California. Only pre-mix is limited to cold areas
True, but "Allowed to be sold" is not the same as "is actually sold." Pep Boys doesn't carry it (at least at one store I tired, confirmed by the store manager and my own eyeballs). Perhaps another chain does?
 

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Discussion Starter · #10 ·
Wow, really?! Damn hippies!

To be fair, I'm with the hippies on this one: Once California picked the low-hanging fruit of vehicle engine emissions, they had to go after other sources, such as charcoal lighter fluid, wood burning stoves, etc. The result is dramatically cleaner air quality over the past 40 years (though still pretty bad in some areas).
 

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To the OPs original question, I recently refilled the reservoir of my 2011 due to the low wiper fluid light coming on and it did indeed take almost the entire gallon jug that I bought at Walmart.
 

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True, but "Allowed to be sold" is not the same as "is actually sold." Pep Boys doesn't carry it (at least at one store I tired, confirmed by the store manager and my own eyeballs). Perhaps another chain does?
+1 i know many people in california using the 20% mix to spray their blower motor cars under high boost to cool it intake air temps way down creating more horse power..... never heard any of them saying they can't buy it.
 
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