Quicksilver - 0W-30 Full Synthetic Power Steering Fluid Electric & Zeus Systems 858077Q01. Overview. Smooth control isn't just something you notice - it is something you feel in your hands. The effortless turn of the wheel. The quiet, confident response of your outboard or joystick system. That is what Quicksilver 0W-30 Full Synthetic Power Steering Fluid is made to protect. Designed for modern marine systems that rely on precision and reliability, this fluid keeps your steering tight, quiet, an