longitudinal rustoration, rust preservation in inaccessable locations Options

[cooler]

I am currently repairing rust on my longitudinal/hell hole/jack receiver. There is surface rust in many inaccessible locations, between layers of sheet metal in the longs and spot welded seams and inside surfaces of the longs. I believe this is where the deterioration of our cars starts.

What products are being used to stop and prevent rust in these inaccessible locations? Are they effective?

Your comments and advice are appreciated in advance.

Thank You

[saigon71]

I agree with Mike on the sandwiched metal...not sure what can be done there.

For blind areas (insides of the longs, tunnel, etc.) I would go with a product such as this:

http://www.eastwood.com/internal-frame-coa...-nozzle-qt.html

I used in in the tunnel of my 914 and between the inner/outer firewall. The flexible extension and multi-directional sprayer worked well to cover everything. I can't speak to it's effectiveness though, as I just applied it last year. Time will tell.