Sorry to jump in here. But it seems to matter whether or not you can get
the plug completely off and change the O-ring. If you can, consider it what
I call "standard tightening."
If you can't (like I can't with my Kia van, which also takes that 24mm,
because the plug drops right onto the frame rail and can't be removed), you
have to tighten it pretty tight so it won't leak.
Hope this helps.
Sorry for the late reply and post - I've been on a business trip.
Perfect... Thanks Hyundaitech, it's sincerely appreciated. Access to
the AT drain plug on the 2006 Elantra is excellent, and very easy to
remove and replace. I chose to change the ATF in the Elantra once
again, because our local Hyundai dealer refuses to use SPIII ATF.
Rather, they want to use a "synthetic equivalent to SPIII." I follow
the book, and refuse to allow anyone to refill with anything other
than SPIII ATF.
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