Temp Drip Rail Filler?

[Lobo'74]

PO had filled in the drip rail with something . . . Bondo?

After 5 years in the weather it was cracking. Never liked it and thought it would just hold water rather than channel it off.

Well . . . when waxing the cab last week I tore into the rain gutters. Popped out all the bondo junk and most of the original seam sealer. It wasn't bad at all under all that. No rusted through areas at all. Then I used one of the fiber type drill wheels to clean off the surface rust.

The plan was to use Eastwood rust converter on it, then coat it with Eastwood Rust encapsulator. I had neither on hand and had to leave for a few days, so I brushed on Rustoleum Heavy Rust primer (reddish brown thick stuff) and the next day sprayed on a top coat of Rustoleum White.

I consider all this a temporary repair to keep the rain gutter flowable until I do the Eastwood fix this winter in the garage, or next spring outside.

Question is . . . what can I use as an effective seam sealer now, that I can get out again when I get the materials for a permanent fix?

Any ideas out there?