Windshield Washer Fluid Freeze-out (Shallow Thoughts)

Akkana's Musings on Open Source Computing, Science, and Nature.

Sun, 02 Feb 2014

Windshield Washer Fluid Freeze-out

I'm nearing the home stretch of a move from California to New Mexico. (I'll be writing about that eventually, but right now I'm in the middle of Moving Hell.) Since we're about to drive our cars out to a place that's getting freezing temperatures, Dave got the bright idea that we ought to replace our windshield washer fluid with a type that doesn't freeze at 32°F.

Easy, right? We drove down to Pep Boys -- and couldn't find any. All they had was marked as 32°. So we asked the gentleman at the counter.

Pep Boy: Sorry, we only carry the 32-degree kind. We're not legally allowed to sell the other kind.

Us: Uh, what?

Pep Boy: We're not legally allowed to sell the antifreeze type because it hardly ever gets down to freezing here.

Us: But what do people do when they're driving up to Tahoe or something?

Pep Boy: They start with the tank empty, stop partway up and buy some, and fill up there.

Us: ...

We drove down the street to O'Reilly's, to double check. O'Reilly's sells a concentrate with additives (methanol) for subfreezing temperatures. Just add water. Wait, what?

I did a web search when we got back home. Sure enough, the California Air Resources Board (CARB) has made it illegal to sell pre-mixed windshield washer fluid with methanol, because the methanol evaporates contributes to "ground level ozone and air pollution", according to The Hanford Sentinel: Looking for winter windshield washer fluid? Good luck!

It's illegal to sell pre-mixed. But it's legal to sell concentrate -- even though the concentrate contains far more methanol than pre-mixed would have.

Words fail me.

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[ 18:30 Feb 02, 2014    More misc | permalink to this entry | comments ]
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