Join Date: Aug 2008
Location: Lowell NC
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the key thing is to flush the under-body to get rid of salt / de-icing brine to not have it in contact. If salt is encrusted and and goes through cycles of getting wet (or staying wet) any weak spots / thin spots in primer / e-coat are going to be areas that get affected.
if gravel or sand has eroded away the primer coat - having that re-shot is another preventative step.
those applied undercoatings can create areas that encapsulate moisture - if salt or brine gets into there, now it does the damage but isn't readily seen due to being trapped between the metal and the undercoating
Probably the thing to do is after each season, put the car up on a lift and inspect the under-body and remove salt build up and proactively treat those areas.
Another member had recently posted a thread about a engine cradle bolt snapping off - the cradle and the apron pinch welds had a great deal of corrosion taking place as well as the bolts being very badly rusted.
2016 392 Hemi Scat Pack Shaker 23Y pkg (M6) ordered 8/28/15, born 10/23/15, home 11/20/15
Torred / Black/ Ruby Red leather
2009 R/T 27J pkg (M6) ordered 7/17/08, born 10/23/08, home 11/13/08
Hemi Orange / Dark Slate/Light Slate Gray leather