At 04:20 PM 11/25/2010  -0700, miguel pacheco wrote:
>  but say it somehow was
>proven to be true, wouldn't the installation of a simple w/washer
>check valve resolve this issue? (insert happy face here so I don't get
>in trouble)

It's better if it runs back down into the reservoir, that way the
nozzle can't freeze except from the outside (which certainly happens
in sleet, wet snow, or once in a while from evaporation of the
alcohol from spray remaining on the outside of the nozzle -- that
takes only a few seconds when you're running down the road).

If it's frozen from the outside there's often enough leakage that you
can keep squirting every few seconds, trying to get a tiny
flow.  Once there's any flow at all the rest melts pretty quickly.

Yours,
d
ps -- don't understand about the happy face.  Why should you get in trouble?