The Star Brite 027032 High Viscosity Lower Unit Gear Lube is formulated with special anti-wear additives, rust and corrosion inhibitors. For lower units of all outboard motors and stern drives. High Viscosity Lower Unit Gear Lube 80W 90 for MIL-PSF-2105E, API MT-1, API GL-5, MACK GO-J, and MACK GO-H. Refer to Manufacturer's Engine Service Manual for flushing and filling instructions. If none are available: 1) Remove upper and lower plugs on lower unit gear case and completely drain old oil. 2) Install fill tube into lower hole. We recommend using Star brite Lower Unit Quart Pump (#27400, Lube Tube (#28600) and Adaptor (#28401, #28402) for easy installation. 3) Slowly refill unit with new lubricant until fluid appears at the lip of the upper hole. 4) Replace upper plug and tighten securely. 5) Remove fill tube from lower hole and replace lower plug. Tighten securely.
