It replaces the special ATF Z1 fluid and is fully compatible with all Honda autos where ATF Z1 is used. (The new Honda ATF DW-1 will be replacing the current ATF Z-1 and is completely compatible with all Honda models). It will be used as the conveyor special fluid for all Honda models starting from 2011. The key features of Honda ATF DW-1 are: At low temperatures: Low Temperature, Lower Viscosity. Better lubrication. Reduced friction at low temperature. Improved fuel economy. At high temperatures: High Temperature, Stable Viscosity. Maintains film thickness. Improved protection against film breakdown. Full synthetic, high film strength. The key difference from ATF Z1 is that this oil is more stable at lower and higher temperatures which leads to the increased automatic transmission service life due to the synthetic technology.