Honda never took any steps to stop the fine particulates which were eventually inevitable in those old steel-tanked Hondas. Trying to troubleshoot the leaky 'carb problem' when the problem was actually very fine rust particulates was eventually cured by installing filters on everything we drive. I suspect some of the rust we had trouble with may have originated in the tanks of the old ATVs. It was also possible that it might have originated in steel drums used to haul fuel in though also. Fuel screens or screen 'filters' don't trap the fine particulates; paper elements seem to work well however.
