The main flunctions of ATF are: 1. Torque transmission function on torque converter. 2. Lubrication and proctective function of gear, bushing and bearings. 3. Cooling function on internal parts of torque converter and clutch. 4. Control function of clutch friction. 5. Hydraulic function of valve body and clutch system. Now that fuel efficiency can be said to be the demand of the times is urgently needed, improvement of power transfer efficiency is required to transmissions just like engine downsizing. We are developing a higher performance ATF with low viscosity toreduxce the loss torque caused by stirring resistance. M300L: Compatible with latest ultra-low vicosity ATF.