Getting the windshield wash that is for freezing temps...QUOTE]
I can't help with everything but with the washer fluid, you can buy it premixed but it is expensive that way. Since you are so close to NV you may be able to get a hold of pure methanol. In CA it is tightly controlled because of people using it for drug labs, but you can still get it at raceways. Anyway if you can get it in NV that would save you some serious cash instead of paying separately for fluid. 1 gal is roughly 15-20 bucks. That will last you quite a while if you dilute your own fluid. At one time I pulled up thermo data on the mixture so I could do this myself. Here is the data if you want to just add the MeOH to your own washer fluid (assuming you can find the MeOH). Just figure out the lowest temp you will experience and add appropriately. It does strip waxes from the paint, is a good solvent (bad for rubber hoses in the long term), and it is a VOC (env issues) so you don't want to use more than really necessary.
I know you probably don't care about the Flash Point data but it was already in the table. I have a pretty curve fit too. But figure no one wants that ... yes I really am an in-gin-ear!
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<TABLE style="WIDTH: 417pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=554 border=0 x:str><COLGROUP><COL style="WIDTH: 106pt; mso-width-source: userset; mso-width-alt: 5156" width=141><COL style="WIDTH: 94pt; mso-width-source: userset; mso-width-alt: 4571" width=125><COL style="WIDTH: 101pt; mso-width-source: userset; mso-width-alt: 4900" width=134><COL style="WIDTH: 116pt; mso-width-source: userset; mso-width-alt: 5632" width=154><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; WIDTH: 106pt; BORDER-BOTTOM: #f0f0f0; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" width=141 height=17>Methanol (%byvol)</TD><TD style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; WIDTH: 94pt; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent" width=125>Water (%byvol)</TD><TD style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; WIDTH: 101pt; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent" width=134>Freezing Point (degF)</TD><TD style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; WIDTH: 116pt; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent" width=154>Flash Point - TCC (degF)</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; BORDER-BOTTOM: #f0f0f0; HEIGHT: 12.75pt; BACKGROUND-COLOR: transparent" height=17 x:num>0</TD><TD class=xl22 style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent" x:num x:fmla="=100-A2">100</TD><TD class=xl22 style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent" x:num>32</TD><TD class=xl22 style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; BORDER-BOTTOM: #f0f0f0; BACKGROUND-COLOR: transparent">N/A</TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl22 style="BORDER-RIGHT: #f0f0f0; BORDER-TOP: #f0f0f0; BORDER-LEFT: #f0f0f0; BORDER-BOTTOM: #f0f0f0; 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Another thing that isn't avail in the US, I haven't looked much into it but in that climate you might consider checking to see if there is a retrofit. In Canada, Toyota provides a low washer fluid indicator so you won't be surprised when the fluid is low. Not a big deal but it sure makes deicing that windshield a piece of cake no scraping required with MeOH.
If you consider using Ethanol, I would avoid it. EtOH is "sticky" and doesn't work well. Propanol is just too hard to get. I don't know what other common cheap deicers there are for fluid but MeOH is by far one of the easiest ways to clean off the ice. It is so nice hit the windshield and in a few swipes all snow and ice is gone.