I just did a drain and refill on my 2000 Honda civic with 24K original miles. After, the refill, the fluid was very clean, bright pink, almost clear. The car came factory with the old z-1 fluid, but I used the new dw-1 fluid. It's been a week, 130 miles. Should I do 2 more drain and refills So that all the tranny is filled with the dw-1 or leave it alone? How long should I go in between drains? Thanks!

 

I don't have the definitive answer, but if it's like most tranny fluids that have backwards compatibility then you are only wasting your money doing two more fills.