A new ATF is now available for all Honda vehicles. Honda ATF DW-1 was developed with the intention of improving low temperature fuel economy. DW-1 is capable of maintaining a lower viscosity at lower temperatures resulting in less energy required to move the vehicle during the warm-up period. High/normal temperature viscosity remains the same as the current ATF-Z1.
APPLICATION:
Factory Fill - All 2011+ MY Honda vehicles will come with ATF-DW1.
Mixing - Automatic Transmissions currently filled with ATF-Z1 can be filled or topped off with ATF-DW1. Mixing the two fluids will not negatively affect performance.
Storage - Dealers using bulk storage systems can mix the new ATF-DW1 with the old ATF-Z1 if necessary. However it is recommended that the existing stock of ATF-Z1 be depleted before refilling with ATF-DW1 as mixing the two does deplete the performance advantages of the DW-1."
I'm definitely glad to hear that the new DW-1 synthetic ATF will maintain the same viscosity as the Z1 under normal operating temps yet still have a lower viscosity at the lower temps so that it shouldn't increase wear on the clutchpacks and should provide no less overall protection than the Z1. As a matter of fact Honda has already stated:
The key benefits for the Honda ATF DW-1 are:
Low Temperature, Lower Viscosity:
- Better lubrication
- Reduced friction at low temperature
- Improved fuel economy
High Temperature, Stable Viscosity:
- Maintains film thickness
- Improved protection against breakdown
- Full synthetic, high film strength
