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Old 05-14-2010, 08:28 PM   #1 (permalink)
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transmission filler and drain bolt

HI! I finally figured out how to post a pic!

Here is a DIY of sorts for doing your tranny drain and fill. Now I only do 1 drain and fill but some people do the drain and fill 2 or 3 times (while driving in between thru the gears to "clean" all the old fluid out.) You can do a search and decide for yourself.

This is for the 2004 MDX:

First find the filler bolt. You can find it by looking down near the circled area:



Here is a close up. I think it says ATF on the bolt:


This bolt is pretty hard to get off so make sure you have some good/creative tools.

Once you get that off (or if you can't you can use the dipstick like others have posted here.) here is a pic of the drain bolt:



Use a 3/8in ratchet or breaker bar. This was very tight the first time I did it. BTW you don't really have to jack the MDX up to do this.

After draining, replace the drain bolt with a new washer and fill her up using Honda ATF only. Check your owners manual for amount. I think mine was 2.9 qts.

Now decide whether you want to drive it thru the gears and do this 2 or 3 more times. I opted for one because I will be doing this on a regular basis.

-cl206
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Old 05-15-2010, 12:25 AM   #2 (permalink)
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Very helpful!
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Old 05-17-2010, 05:50 PM   #3 (permalink)
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I have an 03 MDX and never have had any problems with our tranny. I have always, since new, had the dealer do one drain and fill every 15K miles. At 115K miles I did (3) drain and fills myself and the fluid looked just about new. I actually used Valvoline Maxlife ATF and a bottle of Lubeguard Red and it is smoother now then ever before. Just checked it the other day at 122K miles and it looks new.

I really believe that when it comes to these trannys, that if you do what I do, they will be trouble free. The rear fluid I do every 30K miles and it comes out like it is new.

Have also done this with an 01 Honda CRV since new and NEVER any tranny isues.
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Old 11-20-2011, 12:34 PM   #4 (permalink)
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When I do any drain and refills on auto transmissions I always catch all drianed fluid, messure amount drained and refill with same amount.
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Old 11-20-2011, 05:46 PM   #5 (permalink)
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Done, this thread was a great help.
Thanks
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Old 01-28-2012, 07:29 PM   #6 (permalink)
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Quote:
Originally Posted by softgenious View Post
I have an 03 MDX and never have had any problems with our tranny. I have always, since new, had the dealer do one drain and fill every 15K miles. At 115K miles I did (3) drain and fills myself and the fluid looked just about new. I actually used Valvoline Maxlife ATF and a bottle of Lubeguard Red and it is smoother now then ever before. Just checked it the other day at 122K miles and it looks new.

I really believe that when it comes to these trannys, that if you do what I do, they will be trouble free. The rear fluid I do every 30K miles and it comes out like it is new.

Have also done this with an 01 Honda CRV since new and NEVER any tranny isues.
Do you have any picture for the drain plug of 02 mdx tranny?
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Old 01-29-2012, 03:27 AM   #7 (permalink)
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Originally Posted by rhemz81 View Post
Do you have any picture for the drain plug of 02 mdx tranny?
See item #11 on the attached photo. That is the drain plug bolt (Acura Part #90081-PX4-003 for 2002).
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transmission filler and drain bolt-2002-tranny-mdx.png  
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Old 01-29-2012, 11:40 AM   #8 (permalink)
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Thanks!

I'll try to change the fluid today. Good luck to me. Where do you think is much cheapest price for fluid Acura or honda? Or they are just both same price. Trying to save some bucks... Thanks again!
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Old 01-29-2012, 12:10 PM   #9 (permalink)
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I'll try to change the fluid today. Good luck to me. Where do you think is much cheapest price for fluid Acura or honda? Or they are just both same price. Trying to save some bucks... Thanks again!
Best bet is to drain, fill, drive all gears, drain, fill, drive all gears, drain and fill. On last fill be sure you change plug gaskets (crush washers).

Get fluid from Honda dealer. Cost should be about $7-$8 a bottle and you need 9 bottles though I'd get one extra bottle. Get the gaskets at the dealer when you're there.
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Old 08-29-2013, 01:47 PM   #10 (permalink)
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04 MDX here. I'm having hard time removing the drain bolt. So, just to make sure - it's counterclockwise to remove the drain bolt, correct? Any other tips or tricks I can try? Thanks.
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Old 08-29-2013, 02:54 PM   #11 (permalink)
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Yes. Righty tighty, lefty loosy. It's easier to go through the dipstick hole.
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Old 08-29-2013, 03:16 PM   #12 (permalink)
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I've heard using PB blaster and letting it sit for a while works.
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Old 08-30-2013, 01:18 AM   #13 (permalink)
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Originally Posted by ssMDX View Post
04 MDX here. I'm having hard time removing the drain bolt. So, just to make sure - it's counterclockwise to remove the drain bolt, correct? Any other tips or tricks I can try? Thanks.
Unless ur really strong, I would compensate with GOOD tools.
I remember the first time I tried to open that drain bolt and it was REALLY difficult. My suggestion would be to go out and get a good length 3/8 ratchet.
My favorite ratchet right for that job is (when it was USA made):
Sears.com

Or something like this:
3/8" Drive Ratcheting Breaker Bar

You probably have to jack the car a little to use the above ratchets or maybe even a cheater bar over the tool ur currently using. BTW how long is the tool ur currently using?

And YES it is lefty loosey (counterclockwise as u look at the bolt).
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Old 08-30-2013, 02:46 PM   #14 (permalink)
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Thank you very much for the suggestions. I used PB blaster, a breaker bar and finally took the drain bolt off. Then I filled it through the dipstick hole with a sense of accomplishment, priceless. :-)
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