cookiemonster

No alliteration intended. (Puns always intended - why don't more people intend their puns, and instead excuse them? It's one of the best parts of language) ANYWAYS ...

So I want to buy some seam sealer to seal some unsealed seams on the undercarriage to prevent dirt/salt/etc from getting into the seams to prevent rusting. I hear 3M makes some of the best seam sealers out there, but which one of 3M's sealers should I use?:

http://products3.3m.com/catalog/us/en001/.../

Also, where should I seal these seams? I mean, should I seal all seams that I find? I'm worried about sealing anything that might be a "drain" for moisture or water, or whatever. Can I spray Krylon zinc-rich primer & enamel over sealant?

Any thoughts appreciated.

fairlane292

I wouldn't seal anything. You run more of a risk of trapping moisture; Air in and around the panels is best. They are coated for protection that will last longer than you will likely own the car. Water, rain is not a problem. Salt is the one killer but you can power rinse the underbody if you drive in such winter conditions;