I have done some DIY, and like to understand things... I have seen that the best way to do this to your FIT is to actually getting "dirty" if you know what i mean....
After reading the threads from GD fits transmission fluid change, the conclusion is that the more you stress your transmission ( short drives, extreme environment, etc I drive like an animal i must say) then you must "love" your fit by renewing the fluids....
I have 30K km in my GE fit, and I always wondered why my MPG was so high. I drive 10 minutes in AM and another 10 in PM... no long distance for 3 years now...
Even there is recommendation of drain/Fill when you change your tranny fluid ( which means release fluid approx 2.5 or 3.0L, then retight and fill the same amount with fresh fluid ) I did what some recommend here, which is change the tranny filter ( you have to remove the air intake box) and the "flush" the old oil ( by disconnecting either the in-radiator or out-radiator lines of fluid i did take the line out from radiator, because someone reommended to take out the fluid inside the radiator as well).

I used total 7L ( 3 L initially then 4L after split in 1L intervals). I must say that what comes out is not good looking, specially the flush from the radiator....

Why i am happy with this? because it smooth the ride highly, the engine changes speed smoothly, I have no sandy feeling on my feet when driving, and the best is that the MPG improved a lot next day after change and the second day after.... I had 10L/110Km, and now 8.6L/100Km....

I am still wonderign what the heck....

 

i had mine replaced just under 48k miles. dealer charged 100 bucks for it .. i know, i know, but i didnt have time to do it myself plus its freezing and i dont have a garage.


i primarily got the change due to what ive read on these forums. my 2010 auto started to shift a little stiff, and many people said this resolved their issue, so i took a shot even with the maintenance reminder for the service not popping up. glad i did it -- you guys were right, definitely smoothed out the shifting.


probably wont do it again until shifting starts getting stiff again or it hits 90k.

 

Did mine at 90K

 

I'm in that range. I like changing it often.

 

I often do things that I shouldn't, told not to, or don't need to but considering how harsh the winter has been and some other stuff that turned out better than I thought it would, I'm glad I changed over my AT fluid in the 34K mile range.


I had to do the wife's CIVIC at 57K / 60K since she is a maniac on the brakes / gas / engine oil / backing into things (all 4 corners are scraped plus the middle of the back bumper). After doing the CIVIC (power steer, antifreeze, AT fluid), I decided to also do the FIT (minus the power steering fluid). The fluid was OK: transmission shifting seemed fine; had slight burnt smell; and only had a slight brown color, so it could have gone for another 30K (total of 60K on clock or more).


I used the DW-1 and didn't notice any real changes in shifting but did get "piece of mind" that it is all brand new in there. I'm not sure when the next time will be: another 30K or 60K.

 

Instead of a 3x drain/refill at 60 to 75K miles, I was thinking of a 1x drain/refill every 24k miles. It would be quicker and waste less DW-1.

I've reused the aluminum washer on my other Hondas without problems. If it gets scarred up a bit, run both sides across some fine sand paper.

BTW, Honda advises against using a trans flushing machine. Don't know why, but this is what I've heard.

 

It's a crush washer. Designed to be used once and thrown away. After it's been used once, it's no good anymore. Of course, it could "work." But so would arc welding the drain bolt in place.

Sandpapering a crush washer? What do you suppose you're saving there, buddy? 8 cents? 9 cents? How about the cost of the sandpaper? BTW, any advice on stock market investments?



Happy Motoring! (as they used to say at the Esso station).

 

Well, my first forum troll.

 

60k for me, shifts were a bit notchy and then it felt better. well way more better now that i replaced the tires too!

 

The DW-1 fluid can fix minor shifting issues in my experience.
I take care of 6 Hondas (and occasional other detritus) owned by me and various family members. In the summer I feel like a weekend fleet mechanic.