I think all manufacturers argue against after market rustproofing - but I don't know why exactly... I don't see why they would not support something that could make their cars last longer. Unless they have data that shows it actually makes them not last as long...


I agree with you completely that a good wash regimen and consistent waxing will help prevent a lot of problems.



Can you provide a link to one/some of the "several clear spray on selants available"?

I have painted suspension/brake components with a flat black paint before to help ward off corrosion. I was more concerned with longevity than appearance (bolt heads, keeping rust out from under bolts and nuts and washers, etc).