please for the love of god, just stop!!! rust is a cancer that spreads and spreads, there is obviously a problem if it is at the bottomof the 1/4 panle
gm never put a drain hole at the bottom of the 1//4, hence the rust issue, same with the rust on all older gm`s right by the gas door
what you want to do is not going to stop it, and the other idiotic procedures that were mentioned arent going to help either but make it worse and make the rust come back that much faster
more.......................
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