A part of me thought that using hot water to de-ice and defrost the windshield could cause the windshield to crack...I guess my thoughts were wrong.
Here is a photo of the hotshot unit.
![Image](http://akamaipix.crutchfield.com/products/2005/646/h646HOTSHOT-f_dg.jpeg)
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maybe something like this?Tech225 wrote:There was a unit out a few years back that used the vehicles engine cooling system to heat a small water tank that had the washer fluid running through it in a series of coils. It supposedly worked pretty good but relied on the engine being up to temp..
That would explain the heated washer nozzles then. If the nozzle is kept above freezeing then the washers work. Now keeping the fluid from freezing when it hits the windscreen is another matter, and the reason for high alcohol content winter washer fluid. Interesting aside, when I worked for SAAB we were warned not to drink the washer fluid as some people had done! I also found that traffic Police doing random breath tests look at you very strangely when your car stinks of alcohol but you don't because you've just washed the windscreen.wa2zdy wrote:I don't get it. The washer fluid I've seen is alcohol based and doesn't freeze (within reason) anyway. The thing that keeps the system from working when most needed is the spray nozzle being frozen and clogged.
What does this thing do to prevent that?
I think the main purpose is by spraying warm/hot fluid on an icy windshield any ice/frost will melt quickly.wa2zdy wrote:I don't get it. The washer fluid I've seen is alcohol based and doesn't freeze (within reason) anyway. The thing that keeps the system from working when most needed is the spray nozzle being frozen and clogged.
What does this thing do to prevent that?