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DIY: ATF flush and fill + Magnefine filter installation

144647 Views 178 Replies 50 Participants Last post by  planomateo
Moderator Edit:

Since the pictures are missing, if you want pictures, you can go directly to the following post in this thread to get the pictures.

I just did a complete ATF flush and refill on my 2000 Ody as some people have suggested on this board. Previously, I did a drain and refill at 45K and the infamous “3X” drain and refill by a dealer around 95K. Now the car is over 130K and I started to feel little sluggish lately. The whole process took less than 3 hours including a Magnefine filter installation. Here are the pics. Many thanks to all those people who’ve posted HOWTOs on this project.

Parts needed: case of Honda Z1 ATF (12), Magnefine filter, 2 hose clamps

Tools: screw driver, hose cutter, 3/8” drive ratchet, ½” drive handle + long extension (>12”), 17mm socket, [not in pics:] oil drain pan, measuring bucket (enough to hold 3qts), 12” clear hose (3/4” in diameter), roll of paper/shop towels

Remove the plastic splash guard on the bottom of the engine compartment. Use a screw driver to unplug bumper and fender plugs.

Remove the ATF fill plug using a 17mm socket with long extension. Newer Odys or rebuilt trannies may no longer have this fill plug. Use the dip stick tube instead for refills.

Use a ¾ driver ratchet to remove the transmission drain plug.

Drain ATF. Slightly over 3 Qts should come out.

Clean the gunk around the magnetic part of the drain plug and screw it back in with 36 ft-lbs torque.

Refill ATF. Pour in about 3 ½ Qts.

Cut returning ATF rubber hose on the driver side. Don’t do this if you’re not installing a Magnefine filter. You can simply remove the hose from the ATF cooler.

Insert one end of the clear hose over the factory hose on the radiator side. The other end should point to the measuring bucket.
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Great pictures and write-up!

Did you experience noticeable improvement in shift quality after the flush and filter installation?

Here is what I have done to my '99 EX's transmission:

1x drain & refill at 27k
1x drain & refill at 45k
3x drain & refill at 95k
2x drain & refill at 99k + cooler & filter installed

Since 95k, the van hasn't seemed to accelerate as quickly as before with roughly the same pressure on the pedal. But there is no abnormal/delayed shifting or noise. After the trans services at 95k and 99k, now at 105k, the van runs the same and gives me the "lag" feeling. So I just learn to be patient (but people following me don't seem to be that way). I might just need to give it a big push next time.
The downshifting when going downhill sounds like the grade logic in action. I made a trip to Seattle last summer; my ody downshifted a lot in Oregan when I hit the brake pedal to slow it down as I went down hills. If it is not a abrupt downshift, it should be normal.
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