Torco MTF Manual Transmission Fluid Bottle - 1 liter is a special light viscosity, low friction oil with superior load carrying and wear protection properties. It is formulated using the highest quality petroleum base stocks and unique additive systems that focus on thermal stability, shear stability and shock load protection. The MTF is treated with anti-oxidation, anti-corrosion and anti-foam to reduce fluid degradation and increase life of all drive components. The MTF is specifically recommended by Mercury Marine for use in the MC Six Dry Sump Outdrives. It improves power efficiency and rust protection for outdrive units.