inaccessible rust

1971-1989: 280SL, 280SLC, 300SL, 350SL, 350SLC, 380SL, 380SLC, 420SL, 450SL, 450SLC, 450SLC 5.0, 500SL, 500SLC, 560SL
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Dernburg Wagon
Posts: 5
Joined: Wed 07 May, 2014 9:45 pm
Model you own: I own multiple different models
Location: Geelong

inaccessible rust

Post by GeeMerc » Mon 04 Aug, 2014 7:54 pm

Over weekend removed seats and flooring to expose floor pan. I was considering using POR-15 to the floor pan after taking wire brush to the rust. There is a welded rectangular hollow piece of metal that runs across the floor pan from centre to the side - not sure what it is called. (see attached images)
I took a torch and looked inside the hollow metal and there was a reasonable amount of rust worse on the left hand side. Wondering how to deal with this area of rust as I cannot reach it. Was considering using something like Dynax S-50 cavity wax. Appreciate advice as to how to deal with this area of rust. Have provided photos that show floor pan with one photo showing the rust inside hollow metal piece
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Joined: Mon 10 Apr, 2006 12:47 am
Model you own: w107
Location: Weinheim / Germany

Re: inaccessible rust

Post by T-Modell » Tue 05 Aug, 2014 3:46 am


I would rinse it properly with water to get the dirt out. Then Fertan for 24 hours to transform the rust. Then rinse it properly, put a "creaping" oil (like I used "Fluid Film") to soak all the little cracks and finally after 1-3 days use wax from a spray can.

1967 W111 250SE Cabriolet, horizon blue
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1986 R107 500SL, arctic white, the midlife crisis viagra replacement
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