Meduim Oil Significantly reduces the damaging effects of friction on metal to metal, metal to plastic and plastic to plastic. Good protecter for metal surfaces. Helps to discourage rust, corrosion and oxidation. Good surface adhesion. Viscosity: St @ 40°C ...68 Net 0.5 fl oz (14.7 mL) For use on: • R/C linkages • HO and larger scale model railroad side rods, gears, journals and motor bearing surfaces • Workshop and garden tools, small appliances and casters • Slot-car pinions and spur gears • Precision instruments, fishing reels and office machines