Title says it all. Any reason it wouldn't? It's one of those $4 squeeze/suction simple plastic tools that tells you what temp your coolant is good for.
Bonus if you can say why or why not with some degree of scientific evidence or experience.
I'd rather cut my wiper fluid 50-50 with water, not that it's expensive, but a penny saved is a penny earned.
Will my coolant temp tool work for windshield fluid?
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matthew1
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Will my coolant temp tool work for windshield fluid?
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1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
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1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
2004 V70 R [gone]
How to Thank someone for their post
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matthew1
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Thank you Mr. Turkey. Bonus points awarded! 
I will refrain from saving pennies on this moving forward.
I will refrain from saving pennies on this moving forward.
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.
Also -> Amazon link. Click that when you go to buy something on Amazon and MVS gets a cut!
1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
2004 V70 R [gone]
How to Thank someone for their post
Also -> Amazon link. Click that when you go to buy something on Amazon and MVS gets a cut!
1998 V70, no dash lights on
1997 850 T5 [gone] w/ MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace
2004 V70 R [gone]
How to Thank someone for their post
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jblackburn
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And don't try adding water to your gas either 
I tried that when I was 8 to my dad's lawnmower. He wasn't happy.
I tried that when I was 8 to my dad's lawnmower. He wasn't happy.
'98 S70 T5
2016 Chevy Cruze Premier
A learning experience is one of those things that says, "You know that thing you just did? Don't do that."
mercuic: Long live the tractor motor!
2016 Chevy Cruze Premier
A learning experience is one of those things that says, "You know that thing you just did? Don't do that."
mercuic: Long live the tractor motor!
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fazool
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OK, this is one of those incredibly coincidental and very obscure (and arcane) areas where there is expertise.
I actually hold a couple patents on this and spent seven years designing testers used for, among other things, automotive antifreeze.
The methanol-based washer fluid is already mixed to the required concentration. Antifreeze/coolant is not. Mostly this is because washer fluid is 1) a lot cheaper 2) purchased by non-expert consumers 3) more readily serviced 4) used in smaller volumes. Antifreeze/coolant would require multiple big jugs if already mixed. Plus users mix it differently for specific environments.
The manufacturers of the washer fluid already water it down as much as possible. They want to save every penny on the fluid as well. If they could water it down another 1% and save a penny on methanol, they would. But, watering it down further would reduce its anti-icing function.
So, if you live in a never-freezes area like Florida, sure you can run straight water if you want. I'd suggest a little additive for cleaning help, but water will run safely.
If you live in a frequently-freezes area like Maine, then you don't want to touch the mixture.
I actually hold a couple patents on this and spent seven years designing testers used for, among other things, automotive antifreeze.
The methanol-based washer fluid is already mixed to the required concentration. Antifreeze/coolant is not. Mostly this is because washer fluid is 1) a lot cheaper 2) purchased by non-expert consumers 3) more readily serviced 4) used in smaller volumes. Antifreeze/coolant would require multiple big jugs if already mixed. Plus users mix it differently for specific environments.
The manufacturers of the washer fluid already water it down as much as possible. They want to save every penny on the fluid as well. If they could water it down another 1% and save a penny on methanol, they would. But, watering it down further would reduce its anti-icing function.
So, if you live in a never-freezes area like Florida, sure you can run straight water if you want. I'd suggest a little additive for cleaning help, but water will run safely.
If you live in a frequently-freezes area like Maine, then you don't want to touch the mixture.
2007 S60 2.5T AWD (Daily Driver)
2001 S60 2.4T (Daughter's Car)
2003 S80 2.9 (Son's Car)
1995 850 2.4 (Daughter's Car - sold off)
2005 S40 2.4i (Bought new - since sold)
1986 740GLE 2.3(First Volvo - sold off)
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Billc1015
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I have an old antifreeze tester that will check washer fluid as well. There are seperate graduations on the side for each. The washer fluid scale is below the antifreeze scale on the same side of the tester.
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I am here: http://maps.google.com/maps?ll=40.209903,-75.225388