While I've got the gas tank in the shop for repair and restoration, I'm taking this opportunity to refurbish the luggage compartment. In addition to removing the old sealant from the tank, I've been scraping away 40-year-old body sealant, rust and paint. This is looking like a bigger project than I'd anticipated. The sealant around the joints is disintegrating and breaking off in large globs and will need to be completely removed, the area cleaned, and new sealant applied. But 40 years of sealant, flaking paint and rust will not be easy to clean. Since it's the trunk, and will be hidden by a fabric liner, appearance isn't an issue. I figure I'll scrape and brush away all the loose rust, scrub the area to remove grease and dirt, and then use a POR treatment or rust encapsulator. And probably finish with a coat of gray primer to reinforce the existing paint and coat the bare metal that's been exposed by my scraping.
Here's resource for auto restoration seam sealing: http://www.mig-welding.co.uk/seam-sealing.htm. After treating and painting the surface, I'll need to re-apply sealant around the welds in the trunk. Maybe that should go on after the rust treatment but before the primer. I'll need to do a bit more research, but need to get this done quick, since the gas tank should be back from the shop in about a week.
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