use an oil can & oil the inside of your doors...remove your door panel & put some drops of oil where it'll drip down into the bottom, may help retard the corrosion
it's good to do this on new cars too as a preventative, especially in harsh climates
1999 Sportage 4x4...don't go there, it was free
....______o_o
.../_l l__\____\
..|--l l__----[]\|/[]
.....................oo
=( )_)----( )_)--)_)
