QUOTE(Gint @ Jun 28 2008, 11:59 AM)
I have some vague recollection of seeing a fair amount of rust behind some truck bedliner material that was later removed. Perhaps the surface wasn't prepared properly either, who knows?
There you have it. bedliner, will not rust metal. Metal that is rusty before the bedliner goes on will continue to rust after it is there. As often as not, bedliner is used to cover over rusty beds, rather then keep them from rusting in the first place.
Zach