It would take a very long time for that rust to eat through the suspension parts to the point that they are unsafe. That being said, por 15 would work nice. I was told it is best to use it on rusty surfaces as opposed to fresh clean bare metal since it was designed to go right on top of rust. Theres a whole process/kit that you can get to do the job the right way. If you use a wire brush or wire wheel and go over the bare metal with some good rattlecan paint that would be nice too.
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Last edited by 91chevywt; 12-17-2009 at 03:28 AM.
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