moomoocow
02-05-2016, 11:20 PM
Hi all,
Have been doing some research online regarding the type of fluid I require for my Legend KB1. The service manual indicates that this requires the ATF-Z1 fluid, which now has been superseded by ATF-DW1. ATF-Z1 was the recommended oil for BOTH the transmission and rear diff. However, from all the research I've done on both the Honda Legend (and Acura RL - US equivalent), it seems to suggest that the new ATF-DW1 works well as the transmission replacement fluid, but not so much for the rear diff due to it being thinner in viscosity. Honda service center seems to suggest the use of ATF-DW1, as the rear diff in newer models (MY10+) tend to come pre-filled with ATF-DW1.
Keen to hear your thoughts on the above. Do I use ATF-DW1 for my rear diff? Thanks!
Quote from a Honda-Tech forum:
You might have found out by now that Honda has basically discontinued their ATF-Z1 automatic transmission fluid.
For future automatic transmission use, they've released ATF-DW1.
You might not have realized that the SH-AWD rear differentials ALSO came filled with ATF-Z1 until mid way through the 2010 model year.
All 2011 SH-AWDs come with Honda's new fluid, DPSF, which replaces ATF-Z1 for the rear differential.
While it has a part number similar to Honda's Dual Pump Fluid II (used in the CRV and Element), it is an entirely different fluid.
Retail prices are about the same for all these, typically less than $10 a qt.
Older MDXs (non SH-AWD) will continue to use the VTM-4 fluid that they (and Ridgelines and Pilots) have always used.
Not all your local Acura dealers know this, some of them may want to put DW1 into your diff, others might want to put DPSF into your transmission. If you have your Acura serviced at a Honda dealer, they don't have the DPSF in the Honda lineup, and probably wouldn't think or know to look it up. They cannot use Dual Pump Fluid II, and they might not have any ATF-Z1 left.
Have been doing some research online regarding the type of fluid I require for my Legend KB1. The service manual indicates that this requires the ATF-Z1 fluid, which now has been superseded by ATF-DW1. ATF-Z1 was the recommended oil for BOTH the transmission and rear diff. However, from all the research I've done on both the Honda Legend (and Acura RL - US equivalent), it seems to suggest that the new ATF-DW1 works well as the transmission replacement fluid, but not so much for the rear diff due to it being thinner in viscosity. Honda service center seems to suggest the use of ATF-DW1, as the rear diff in newer models (MY10+) tend to come pre-filled with ATF-DW1.
Keen to hear your thoughts on the above. Do I use ATF-DW1 for my rear diff? Thanks!
Quote from a Honda-Tech forum:
You might have found out by now that Honda has basically discontinued their ATF-Z1 automatic transmission fluid.
For future automatic transmission use, they've released ATF-DW1.
You might not have realized that the SH-AWD rear differentials ALSO came filled with ATF-Z1 until mid way through the 2010 model year.
All 2011 SH-AWDs come with Honda's new fluid, DPSF, which replaces ATF-Z1 for the rear differential.
While it has a part number similar to Honda's Dual Pump Fluid II (used in the CRV and Element), it is an entirely different fluid.
Retail prices are about the same for all these, typically less than $10 a qt.
Older MDXs (non SH-AWD) will continue to use the VTM-4 fluid that they (and Ridgelines and Pilots) have always used.
Not all your local Acura dealers know this, some of them may want to put DW1 into your diff, others might want to put DPSF into your transmission. If you have your Acura serviced at a Honda dealer, they don't have the DPSF in the Honda lineup, and probably wouldn't think or know to look it up. They cannot use Dual Pump Fluid II, and they might not have any ATF-Z1 left.