Mercury - Portable Marine Fuel Tank Fuel System Accessories Blow-Molded Construction 8M0047598. Overview. There's a certain comfort in knowing your fuel setup is as dependable as the water beneath you. A good portable tank doesn't just store fuel-it sets the tone for the entire day on the water. The Quicksilver 8M0047598 Portable Marine Fuel Tank, with its 3.2-gallon capacity and trusted Mercury Marine engineering, brings that sense of quiet confidence. Whether you're cruising the shoreline at s