Wrapper

Its funny that no one here has really hit the nail on the head on this one
yet.

Increasing the number of freeze-thaw cycles over a car's life along with the
presence of moisture (and compounded by corrosion- inducing ions found in
road salt) will certainly accelerate the pace of rusting. The moisture
gets into seams and beneath undercoating and dirt and paint (even in
microscopic size locations) and then freezes (which expands, causing minute
but detrimental movements in the metal and paint bonding) and then thaws and
allows the moisture-salt solution into even more new new places to repeat
the process is what does the damage over time.

And by the way, a high pressure car wash in the winter will force that
corrosive solution deeper into the seams and nooks and crannies and can do
more harm than good. Worse yet, some car washes use water that has been
recycled several times and has a very concentrated salt solution from
everybody elses car before you use it - shooting this stuff all under your
car a few times every winter is really asking for it. Sounds funny, but if
you suspect recycled water after the carwash owner denies it, taste it for
saltiness (have a bottle of good water handy to rinse afterwards in any
case!)





<trader4@optonline.net> wrote in message
news:1133651113.603055.313620@g49g2000cwa.googlegroups.com...[color=blue]
> "Even better is to rinse salt out of those
> spaces with water - not the salt recycled water found in car
> washed. What does a car wash do? Wash that salt into places
> you don't want it. "
>
> Now this is an interesting point of discussion. I've wondered about
> this. Does a decent car wash have anything in it's water recycling
> system to remove salt from the water? Do they at least use clean water
> for the rinse? If not, I wonder how high the salt concentration would
> get and how long after the last application of road salt it would be
> before the car wash had eliminated most of it from the water in use?
>[/color]