Mercury - Portable Fuel Tank 6.6 Gallon Series Blow-Molded UV-Protected Construction 8M0054600. Overview. Anyone who's spent long days running a small outboard knows how comforting it is to have a fuel tank you can rely on. It's not flashy, but it's the kind of gear that quietly makes every trip easier. The Quicksilver 8M0054600 6.6 Gallon Portable Fuel Tank brings that same calm confidence you feel when the engine fires up cleanly and the water ahead is wide open. Whether you're heading out bef