Depends on the year of AS (coated vs not) and how heavy the corrosion is.
Our Pacer spent 57 years in Wisconsin. We bought it from the original owner in 2013, the front was pointed toward the road much of it's life. I'm guessing the road salt was plowed to the sidewalks and then snow blown on the AS.
This after two heavy cuts with a tripoli solution. The pitting will never go away.
I have done another heavy cut and it is slowly improving.