- Feb 11, 2008
Just wanted to give my experiences on a 2007 Honda Accord I bought with 92k miles on it. When I started changing the fluids in it I was pretty sure the Trans fluid had never been changed. It still looked fairly good and I settled on Valvoline maxlife for the AFT fluid. I ran 8 qts though it over a period of about 250 miles. The Trans drain plug looked fairly clean for 92k miles. I also changed the transmission filter on top of the engine. Transmission shifted very smooth before the change. Since then I have put about 4000k miles on it. Started noticing harder and harder shifts. Also it seemed say a little too long in gear on downshifts. Started reading more and more that the 2007 and older Honda and Hondas that came with ATF-Z1 had the best shifting with Z1. I debated on what to try next. I felt DW-1 was not going to be right for a 2007. Also wanted to match Z1 as close as possible. Was going to try Amsoil when I found a Z1 replacement. It is called Idemitsu Type H and claim it’s a Z1 fluid just for Hondas not a universal fluid. Tried it and ran 7 quarts though it over a period of 100 miles. Night and day diffence, it is shifting like before. Smooth but crisp and downshifts are normal. One thing I noticed is that the drain plug after 4000k miles on maxlife looked just as dirty with 92k on Z1. I would urge anyone with an older Honda that came with Z1 to use it. I would not even tempt DW1. Valvoline is a good fluid and so is DW1 but I think something peculiar in the older Hondas. Even anyone wants to know where to get Idemitsu Type H let me know. I got it for $90 shipped for 12 qts.