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Discussion Starter #1
So I have been paying attention to the transmission thread and it would appear that the Honda Z1 and DW1 isn't very good for the tranny's longevity. I am debating on whether I should drain what I can and replace the fluid (at least partially for now) and fill with the d4 fluid. I know that many of the gen 2 Odyssey go this route but I don't see near as many threads to use d4 on gen 3 trannys.

Bottom line is that I have a 2000km road trip this Friday in mountainous terrain but I am hesistant to sub in something I am not familiar with. Will I have reliability or drivability issues? The redline to my understanding has way less friction modifiers which I would guess means harsher or more solid shifts than the smooth stock fluid gives.

IF I went with a partial d4 fill would I get at least some benefit? My tranny shifts good with no issues at 100,000 kms. The odd grade logic initiated downshift from 3rd to 2nd gear is harsh sometimes. I would do a full change if I had more time but I just don't want to deal with the mess of pulling the tranny cooler hose.

Thoughts?

Thanks
 

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Did you try the search? Partial synthetic replacement of ATF is a very common subject/question on here with the prior gen and with your gen to a certain degree due to shudder/judder issues.
 

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Discussion Starter #3
Hi dvp yes that is what I found was a lot of buzz about the gen2's but I guess limited info regarding the gen3's by comparison. What I do know is the 05 and 06 can be kludgy and it was in 07 when they fixed more issues by subbing in a ridgeline tranny. Like many of us on car forums we are looking for ways to preserve our vehicles to get the max life out of our investment. I guess I should fret about the tranny considering that there doesn't appear to have any issues and the condition of the fluid (based on smell and color) has no issues. D4 fluid i would image is expensive and I have piles of z1 and even the newer dw1 fluid in my garage - don't want to buy more oil when I have lots of the factory stuff.
 
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