That is what it is made for.

In 1983 I acquired a 1964 Dodge 330 that had been sitting beside a barn for ten years (yeah, it would have been great had they just pulled it inside). I towed it home and had it running in 20 minutes with a plastic gas can supplying the fuel via gravity to the carb.

The gas tank was full of rust, water and old fuel. I pumped out as much as I could and filled it with fresh gas. I cranked it over until the fuel coming out of the line was looking clean. Reattached the gas line and away it went. Licensed it and started driving it.

It had an aftermarket inline filter. I would drive it for about three days and it would die on the highway. I would coast to a stop and get out and reverse the inline filter directing the end into a coffee can. I would crank it over a few times and back flush the filter before turning it around and reattaching the line. Crank it up and hit the road again.

The novelty of that procedure wore off in short order. I removed the tank and knocked out as much rust as possible and treated the tank with the sealer. End of problem.

Randy