Yeah, you don't want that exposed to road salt or other gunk. Being from
out west, I never had to worry about road salt until moving to the mid
west. Salt's so corrosive, so I hate driving my 2 year old car in the
winter here, but oh well, it's got a 6 year rust warranty and probably
won't be worth much anyway after 6 years, so I continue driving it in the
winter. I asked the dealer about rustproofing. He said you don't need
it, since they already do it at the factory.
I know people who drive 'winter beater' cars, but is that worth it? Seems
to me, the added expense of buying, maintaining, and insuring a 2nd car
for use as a winter beater would end up costing more than the
relative depreciation on your new car by driving it in the winter and
exposing it to salt. Plus throw in the fact that you'd be deprived of the
satisfaction and safety of driving the newer/nicer car in the winter.
Guess it depends on what kind of car you have and what it's worth.