Water (usually what corrodes fuel tanks) sinks to the bottom when it separates. Plus running any other contaminants through your fuel pump is exactly what you w

Water (usually what corrodes fuel tanks) sinks to the bottom when it separates. Plus running any other contaminants through your fuel pump is exactly what you want - burn them up and get rid of them, don't leave them floating in your tank until you get a hole in your tank from them.