Personally, I dump gas tanks when rust becomes an issue. BTDT -- stranded on the trail with plenty of gas, working fuel pump; but, rusty tank clogging the fuel filter. Then there was the time when rather than denting when hitting the rock, the tank sprung a leak. Yep, rust spot = weak spot.

That said the motorcycle gearheads do have a process, including paint, that will clean and seal a rusty tank. But, that was 15 plus years ago.

Again, personally, I would replace the rusty tank.

John Stewart
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