RTF Racing Transmission Fluid is specifically engineered to reduce fluid drag for increased power efficiency without compromising component durability. It is made from a combination of specially selected 100% synthetic Group IV/V base oils proving superior shear resistance and extreme temperature stability. RTF is specially formulated to exceed the load-carrying and extreme pressure wear protection properties of higher viscosity GL-5 or GL-6 gear oils. RTF provides anti-score protection for high speed, high load and high torque shock-loading conditions, while allowing smooth operation of synchronizers.
MTF Manual Transmission Fluid is a special, light viscosity, low friction oil with superior load carrying and wear protection properties. It is formulated using the highest quality petroleum based stocks and unique additive systems that focus on thermal and shear stability, and shock load protection. MTF is treated with anti-oxidation, anti-corrosion, and anti-foam chemistries to reduce fluid degradation and increase life of all drive components.
We have been using this on our K series transmissions for years and it works.... If you want your trans to shift like "Buttah" this is the setup you need