Thing is I recall in 2010 buying a 'concentrated' bottle and left it in a cupboard in my shed unopened, I found during the harsh winter said concentrate had frozen solid.
![Big Grin :D](./images/smilies/icon_e_biggrin.gif)
![Twisted Evil :twisted:](./images/smilies/icon_twisted.gif)
The location of the washer bottle probably is not brilliant given most are around the front bumper area. I've seen these 'heaters' where you have a twisted coil of washer pipe around a heater hose* which may work in a fashion, the same as heated jets I guess but the bottle will still freeze.
Question: Is adding a touch of 'Meths to the washer fluid a good idea still ? , I know that has a really low freezing point and should in theory mix in and not separate.
*I looked into these for my 205TD as a fuel heater but the plastic nature of the 'twist' would not of been brilliant with diesel inside.