AUTOMATIC TRANSMISSION FLUID  ATF B7

MASUMA Fully synthetic automatic transmission fluid ATF series: Apply to AT automatic transmissions. Automatic transmission fluid (ATF for short) is a kind of transmission oil specifically designed for vehicles with automatic shift or automatic speed switching. Early automatic transmissions were not designed with designated fluid but adopted engine lubricant in stead. Now, the designated fluid for automatic transmission serves as not only the transmission oil for torque converter but also the lubricant for planetary gear structure and the hydraulic fluid for gearshift.