Differential fluid drain and refill (2 drain plugs?)

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Old 06-20-2007, 06:15 PM
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Differential fluid drain and refill (2 drain plugs?)

I was doing the differential fluid drain and refill......I saw 2 drain plugs back there but only I filler hole. Aren't there suppose to be 2 filler holes? I only drain one of them and left the other one alone......please let me know how to fill the other one up?
Old 06-20-2007, 07:37 PM
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Originally Posted by FullTilt
I was doing the differential fluid drain and refill......I saw 2 drain plugs back there but only I filler hole. Aren't there suppose to be 2 filler holes? I only drain one of them and left the other one alone......please let me know how to fill the other one up?
Havent looked at it yet, but on the MDX it has 2 plugs. The lower plug is to drain the fluid and the upper to refill the fluid. I always open the top one first to make sure once I pull the drain plug I can refill it.
Old 06-20-2007, 10:27 PM
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Originally Posted by backfire
Havent looked at it yet, but on the MDX it has 2 plugs. The lower plug is to drain the fluid and the upper to refill the fluid. I always open the top one first to make sure once I pull the drain plug I can refill it.

Well, it has 2 drain plugs and 1 filler plug.
Old 06-20-2007, 10:57 PM
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Nope, there are two of each-I have taken out both pairs twice now when ca=hanging my diff fluid. One is a bit difficult to get to, but it is doable without needing a lift.
Old 06-22-2007, 08:59 AM
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Originally Posted by acurafox
Nope, there are two of each-I have taken out both pairs twice now when ca=hanging my diff fluid. One is a bit difficult to get to, but it is doable without needing a lift.

I still can't locate the other filler cap.....??? Can anyone take a picture of it and show me where it is?
Old 06-22-2007, 12:48 PM
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Here's a great close-up of the differential. I only see one filler and one drain.

http://www.s2000enthusiast.com/sec-o...ura_RDX_66.jpg

Why would you have two of each unless there are two separate cavities that house the fluid separatel?

In other words, if you only use one of each, will you be able to do a full drain and refill?
Old 06-22-2007, 04:48 PM
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My dealer told me there were two of each....

How frequently (how many miles) do you guys change your fluid?

What fluid do you use?
Old 06-23-2007, 12:28 AM
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Originally Posted by andrewmr
My dealer told me there were two of each....

How frequently (how many miles) do you guys change your fluid?

What fluid do you use?

It takes Honda ATF-Z1 fluid. Same as what we using in our transmission.
Old 06-23-2007, 12:29 AM
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Originally Posted by andrewmr
My dealer told me there were two of each....

How frequently (how many miles) do you guys change your fluid?

What fluid do you use?

But I only see 1 filler hole and 2 drain hole.
Old 03-25-2008, 03:40 PM
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does anyone have an answer to where the other filler hole is?
Old 03-25-2008, 08:59 PM
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Originally Posted by INOPLOVR
does anyone have an answer to where the other filler hole is?
The second filler hole is on the back of the differential case. Toward the upper right hand corner (when facing the front of the car). It's hard to see because of the rear sub-frame cross-member, but it's there and it is reachable although it's a close fit between the differential case and the rear cross-member.
Old 03-26-2008, 06:33 AM
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See page 2 of 5 via the following pdf link for a drawing showing where the plugs are->

http://www.in.honda.com/Rjanisis/pubs/SN/B060900.PDF
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